Approaching Training: A Science-Based Guide to Effective Strength Training

Training your body effectively is like administering a precise dose of medicine: the goal is to apply just the right stimulus to provoke positive adaptation, such as increased muscle size, strength, and overall fitness, without causing harm or interfering with recovery. Drawing from principles of muscle physiology, the key lies in understanding how muscles work at a cellular level and designing workouts that maximize stimulation while minimizing risk. This approach emphasizes high-intensity strength training with careful attention to intensity, recruitment patterns, recovery, and frequency. Let's break it down step by step into a practical framework.

Understanding Muscle Fibers: The Foundation of Training

At the heart of effective training is the recognition that your muscles are composed of different fiber types, each with unique properties that influence how they respond to exercise. Humans have four main types: slow-twitch (Type I, or SO) fibers, which are endurance-oriented and fatigue slowly; and three subtypes of fast-twitch fibers — fast-oxidative (Type IIA, or FO), fast-oxidative-glycolytic (Type IIAB, or FOG), and fast-glycolytic (Type IIB, or FG) — which generate more power but fatigue quicker. Slow-twitch fibers rely on aerobic processes for sustained, low-force activities like walking, while fast-twitch fibers kick in for high-force demands and have greater potential for growth and strength gains.

Your genetic makeup determines your fiber distribution, but most people have a balanced mix. Importantly, these fibers aren't recruited randomly or based on movement speed; the brain activates them via the central nervous system in a fixed order, prioritizing energy conservation. It starts with the easiest-to-engage slow-twitch fibers, escalating to FO, FOG, and finally FG only as needed for greater force. This recruitment is driven by the load or resistance you impose — not by how fast you move.

Fibers are organized into motor units: groups of identical fibers connected by a single nerve, like branches on a tree trunk. Slow-twitch units are small (around 100 fibers each) and numerous, allowing fine control for light tasks. Fast-twitch units are larger (up to 10,000 fibers) and fewer, packing a punch when activated. When a motor unit fires, it's "all or none" — every fiber in it contracts at full force. The designations "slow" and "fast" actually refer to fatigue rates, not contraction speed: slow-twitch fibers recover quickly but produce less force, while fast-twitch ones deliver high force but take longer to rebound.

The Key to Stimulation: Sequential Recruitment Through Moderate Intensity

To stimulate growth and adaptation, training must recruit and fatigue as many fibers as possible, especially the high-potential fast-twitch ones. This is where intensity — analogous to a drug's concentration — comes in. Intensity is determined by how many fibers are engaged, which depends on the resistance you choose.

In a well-designed set, aim for sequential recruitment: start with slow-twitch fibers, fatigue them quickly, then progress to intermediate (FO and FOG), and finally fast-twitch (FG) without letting the earlier ones recover and cycle back in. This ensures comprehensive stimulation across all fiber types.

• Avoid light weights: If the load is too low (e.g., allowing endless reps), you'll mainly engage slow-twitch fibers, which fatigue slowly and recover mid-set, preventing escalation to fast-twitch recruitment. Result: minimal growth stimulus.

• Avoid overly heavy weights: Lifting a max load for just 1-2 reps recruits all fibers simultaneously. Fast-twitch ones fatigue first, ending the set before thoroughly working the slower ones, leaving much of the muscle understimulated.

• Hit the sweet spot: Use a moderately heavy weight that allows 6-12 reps (or about 45-90 seconds under tension) until momentary failure — where you can't complete another rep with good form. This pace fatigues lower-order fibers fast enough to force recruitment up the chain without recovery gaps, culminating in fast-twitch engagement when you're already weakened.

Time under tension is crucial: keep sets in the 40-150-second range (ideally 45-90 seconds) to optimize this orderly fatigue. Move with controlled cadence — avoid explosive lifts until a base of strength is built, as they prioritize simultaneous recruitment and heighten injury risk through high acceleration forces (force = mass × acceleration) for those unable or unfamiliar with such forces.

Why Strength Training Excels: Safety and Thoroughness

Unlike aerobic activities like running, where increasing intensity (e.g., from walking to sprinting) exponentially ramps up impact forces and injury risk, proper strength training does the opposite. It uses controlled movements that align with natural muscle and joint functions, recruiting fibers sequentially rather than all at once.

As you progress through a set, you actually become weaker due to accumulating fatigue, meaning by the time fast-twitch fibers engage, the effective force on your body is lower, reducing the chance of overload injuries. The resistance stays constant (e.g., a 100-pound weight remains 100 pounds), but your capacity diminishes, creating a built-in safety net. This contrasts with explosive modalities like plyometrics or sprinting, where simultaneous recruitment can generate forces exceeding structural limits, potentially causing damage while understimulating lower-order fibers.

The result? A potent, full-spectrum stimulus that hits every fiber type, boosts metabolism, and enhances overall fitness without unnecessary risk. All metabolic pathways tied to movement are engaged, leaving no aspect of adaptation untouched.

Recovery: The Anabolic Phase

Training creates microtrauma: a temporary damage from contractions, especially eccentrics (lowering phases) which trigger inflammation, soreness (peaking 24-48 hours post-workout), and repair. This catabolic breakdown must be followed by anabolic recovery: rebuilding stronger than before.

• Slow-twitch: Recover in 90 seconds to minutes, allowing quick reuse in daily activities.

• Fast-twitch: Take 4-10 days (or more) to fully rebound, as they're reserved for high-demand scenarios.

After a high-intensity set to failure, you might struggle to stand immediately, but lower-order fibers recover enough in 30-90 seconds for basic function. However, full systemic recovery that refills the energy "holes" and overcompensates with extra strength will take longer. Premature training digs deeper holes instead of building mounds.

Dosing Frequency: Balancing Stimulus and Adaptation

Like medication, over-frequent dosing disrupts progress. High-intensity (i.e. heavy weight load) workouts demand ample recovery time for repair and growth. Based on physiological studies and extensive training experience, aim for workouts every 4-7 days per muscle group (or less frequently if intensity is extreme). The greater the intensity, the longer the wait, often 7+ days to allow inflammation to subside, tissues to rebuild, and overcompensation to occur.

Monitor progress: If strength stalls or decreases, you're likely under-recovered. Gradually increase resistance as you adapt to maintain the stimulus, but always prioritize full recovery over volume.

In summary, approach training as a targeted intervention: Select moderate-heavy loads for sequential fiber recruitment in controlled, 45-90-second sets to failure. Embrace strength training's safety advantages, allow days for recovery, and space sessions to permit adaptation. This method not only builds muscle and strength but enhances overall health, turning exercise into a sustainable path to peak fitness.

The Way: A Step-by-Step Directive for Selecting a Diet

When navigating the overwhelming world of dietary advice, where conflicting "experts" and fad diets create confusion, a clear and grounded framework is essential for making sustainable, health-promoting food choices. Joel Greene’s The Way offers a compelling approach rooted in ancestral wisdom, natural rhythms, and scientific insight, cutting through the noise of modern diet trends.

By observing nature’s patterns — scarcity, variety, and cyclical eating — Greene emphasizes a return to diverse, balanced diets that align with our biology and the realities of time. The following step-by-step directive distills these principles into a practical guide for selecting a diet that prioritizes long-term health, minimizes toxicity, and respects individual needs, all while drawing authority from nature itself rather than fleeting trends or dogmatic food tribes.

1. Observe Nature as Your Authority

• What to Do: Base your eating choices on nature’s patterns—seasonal cycles, hunger cues, and historical human diets. 

• Why It Matters: Nature provides a time-tested guide for eating, free from modern fads. Ancestors ate what was available, guided by instinct and environment. 

• How to Apply: Eat when you’re hungry, not by a schedule. Look to traditional diets (like Mediterranean or hunter-gatherer) or seasonal foods for inspiration.

2. Seek Variety, Nature’s Answer to Scarcity

• What to Do: Pursue a wide range of foods—plants (greens, roots, berries), animals (meat, fish, dairy), and fermented options—to mirror ancestral eating habits shaped by unpredictable food availability. 

• Why It Matters: In times of scarcity, variety ensured survival by providing balanced nutrients and reducing dependence on one food source. Today, it keeps your diet rich and adaptable. 

• How to Apply: Switch it up—pair fish with leafy greens one day, then try berries with nuts the next. Use seasonal or local foods to let nature steer your choices.

3. Cycle Your Eating Patterns

• What to Do: Alternate between light meals (foraging), no meals (fasting), regular eating (abundance), and hearty meals (feasting) based on your body’s needs and life’s rhythms. 

• Why It Matters: Nature’s cycles—lean times and plenty—keep your metabolism flexible and aligned with activity or seasons. 

• How to Apply: Try a day of salads, a morning fast, then a big dinner. Adjust protein or carbs—more when active, less when resting.

4. Prioritize Quality

• What to Do: Choose fresh, whole, minimally processed foods over packaged or refined options. 

• Why It Matters: High-quality foods, like those our ancestors ate, deliver nutrients without artificial additives, supporting long-term health. 

• How to Apply: Source from farms, grow herbs, or pick unprocessed options—like fresh fish over canned.

5. Personalize Over Time

• What to Do: Tweak your diet based on how your body responds, adjusting amounts or frequency to suit your unique needs. 

• Why It Matters: No one-size-fits-all exists—your diet should evolve with your lifestyle, energy, and health. 

• How to Apply: Track energy, digestion, or mood after meals. Test more carbs or fats for a week, then refine based on what works.

The Power of Intensity: Rethinking Fitness with Science

A 2006 study by Martin Gibala and colleagues, published in the Journal of Physiology, challenges the notion that longer workouts are necessary for significant fitness gains. The research compared high-intensity sprint-interval training (SIT) with traditional endurance training (ET) to evaluate their effects on exercise performance and muscle adaptations.

Sixteen young adults (aged 20–22) completed a baseline test: cycling 18.6 miles on a stationary bike. They were split into two groups for a two-week training period. The SIT group performed 30-second all-out sprints at 250% of their VO2 max, followed by four minutes of rest, repeated 3–5 times per session. They trained three days a week, totaling 6–9 minutes of intense exertion (12–18 minutes of cycling) over two weeks. The ET group cycled at a moderate 65% VO2 max for 90–120 minutes per session, same schedule, totaling 9–12 hours of exercise.

Despite the ET group training 97.5% longer, both groups improved equally in the 18.6-mile test. Muscle biopsies showed comparable increases in oxidative capacity (via cytochrome c oxidase activity and protein content), buffering capacity, and glycogen storage—markers of endurance and metabolic health, including type 2 diabetes prevention. The researchers concluded: “SIT is a time-efficient strategy to induce rapid adaptations in skeletal muscle and exercise performance that are comparable to ET in young active men.”

The key is leaning into intensity, not duration. The 6–9 minutes refers to exertion time—maximum effort, like lifting a weight that may crush you or sprinting as if your ex were chasing you. Half-hearted efforts won’t cut it; near-maximal intensity is essential. This study focused on endurance, but the principle of effort and intention amplifying outcomes applies broadly. In strength training, for example, half-assed reps require more sets to achieve results, while focused, max-effort work builds muscle efficiently.

Due to it's efficiency, this approach works well for busy individuals: 6–9 minutes of weekly exertion can rival hours of moderate exercise, potentially reducing wear-and-tear from prolonged activities like running. Total gym time, including rests and warming up to intense weights, may be 30–45 minutes per session. The data underscores that intention and effort drive results, whether you’re chasing endurance or strength.

Questions about applying this? I’m here to help.

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Reference: Gibala, M. J., et al. “Short-Term Sprint Interval Versus Traditional Endurance Training: Similar Initial Adaptations in Human Skeletal Muscle and Exercise Performance.” Journal of Physiology 575 (2006): 901–11.

Why More Exercise Doesn’t Always Burn More Calories

from The Biggest Losers: Metabolic Damage or Constrained Energy?

We’ve been taught that the more you exercise, the more calories you burn—and the more fat you lose. But Herman Pontzer’s research tells a different story. His work on constrained energy expenditure shows that humans operate within a relatively fixed daily energy budget, no matter how much we move.

In other words, when you crank up your physical activity, total energy expenditure doesn’t increase linearly. Instead, the body reallocates resources to stay within its set limit. What gets sacrificed? Things like muscle repair, hormone production, immune function, and even NEAT (non-exercise activity thermogenesis).

So while it feels like you're doing more, your body is quietly cutting corners to compensate. You burn calories during the workout—but recover less afterward. Hormones take a hit. Metabolism adapts. And the stress signals may even lead your body to shed muscle and hold onto fat.

The result? A system that’s overworked, under-recovered, and not nearly as efficient at changing your body as you hoped.

Your body isn’t trying to sabotage you—it’s trying to survive. But it can’t tell the difference between overtraining and famine. So it shifts into conservation mode, doing what it must to protect itself.

You thought you were being productive. Your body thought it was under threat. And it responded accordingly.

Food is Information

Photo by Pineapple Supply Co. on Unsplash

I've been mulling over this: our food isn't just fuel, it's information. Plants absorb their surroundings — sunlight, soil, water — and encode this into their very being, down to the electrons. Eating food grown elsewhere hands our bodies mismatched information, creating a disconnect between the food's origin and our current environment, which I think can subtly disrupt our system over time.

Imagine this: each meal carries the signature of its birthplace. A tomato ripened under the Sicilian sun isn't just different in taste from one grown in a Japanese greenhouse; it's fundamentally distinct. The light it absorbed, the soil it's rooted in, the seasons it endured all imprint an environmental code into its makeup. Our bodies evolved consuming local produce — foods that reflect the same light and air we're exposed to. Our gut, equipped with sensors — nerves, microbiome, the whole setup — is tuned to interpret this code. When the food's story aligns with our surroundings, everything's in sync. But munching on a tropical mango in a snowy urban apartment? That's like playing static through our system.

This "static" is the misaligned data I'm talking about. Picture being in Minnesota during midwinter: short days, dim light. Your eyes and skin register this, signaling your body to conserve energy. Then you eat a pineapple from Costa Rica, grown under intense equatorial sun. Your gut receives signals of abundance and heat — completely out of sync with what your eyes and skin are conveying. This desynchronization is likely causing the system to glitch. It's not science fiction; it's intuitive. Nature operates in harmony: food, place, and body speaking the same language. Disrupt this, and you invite chaos.

What does this chaos manifest as? Inflammation. It's the body's way of signaling, "Something's off." Perhaps your gut struggles to process that pineapple — enzymes don't match its profile, or your microbiome overreacts. A bit of irritation sparks, a few extra free radicals emerge, and inflammation simmers. Initially, it's subtle — maybe some bloating, a dip in energy, a vague sense of unease. But it's real. One meal like this isn't catastrophic, but make it a habit — like many of us do with globally sourced grocery aisles — and it's not just a blip. It's cumulative.

Health is a marathon, and this is where it gets tricky. A single imported avocado won't derail you, but over years or decades and things begin to add up. Assuming one meal a day with a mismatched food over 20 years, you're at 7,300 meals nudging your gut off balance, fostering inflammation, altering your metabolic processes. This could account for 20-30% of extra weight, dwindling energy, the uphill battles we're all promised to face health-wise. It's not headline-grabbing — "Imported Oranges Ruin Life" — but it's a slow leak, draining vitality bite by bite.

Here's the twist: it's not just about mismatched food, it's the entire system. Nothing in health exists in isolation. If you're excelling elsewhere — getting quality sleep, ample sunshine, staying active, managing stress — this might barely register. Your gut grumbles, inflammation ticks up slightly — maybe 1-5%— but you've got the resilience to brush it off. You're a well-oiled machine; a bit of bad data doesn't cause a breakdown. But if you're already struggling — sleepless nights, confined indoors under artificial lights, high stress, sedentary lifestyle — then that same out-of-place food hits harder. It could be a 20-30% impact, or more, because your system lacks a health buffer. The gut's already compromised, baseline inflammation is high, and that foreign pineapple is like rubbing salt in the wound. Everything's interconnected. Hammer the basics, and this is a footnote; neglect them, and it's probably a player in your decline.

Where are your studies? I don't have any. I don't need a stack of studies to grasp this — it makes sense. Step outside, observe: nature thrives on coherence. A deer grazes on the grass beneath its feet, not on feed shipped from another continent. Our ancestors consumed what grew around them — berries in summer, roots in fall. Their eyes saw the same sun as the plants; their skin felt the same breeze. Now? I'm eating Columbia bananas under fluorescent lights, and my body's confused. This mismatch delivers incorrect information — the gut anticipates one thing, eyes and skin report another — and inflammation ensues. How significant is this? It varies. For the average person — with mixed habits and a global diet — I'd estimate it's 10-15% of why we're heavier, more fatigued, and less healthy than we should be. Optimize your lifestyle, and it's less; let things slide, and it's more. Either way, it's a factor.

So, yes, I believe eating local, seasonal food matters — not just for the feel-good aspect, but because our bodies are designed for it. Transporting food across the globe disrupts a rhythm we're attuned to, and we pay the price, even if it's gradual. It's not the entire picture — sleep, exercise, stress all play roles — but it's a thread I can't ignore. What about you? What do you think?

Beyond Calories: Creating Transformative Awareness around Weight Loss

Photo by Ketut Subiyanto

Weight loss is a simple formula: consume fewer calories than you burn, and you'll lose weight. This principle is undeniable as it is rooted in the laws of thermodynamics. Yet, for most people, the journey to achieving and sustaining weight loss is anything but simple. While science underscores the importance of energy balance, it also reveals the sobering reality of outcomes: 95% of individuals who embark on a weight loss journey fail [1] and less than 20% of those that succeed maintain their goal for more than a year [2]. These statistics aren't just a testament to the difficultly of the task — they highlight a critical gap between theoretical knowledge and practical application. The disconnect lies not in our understanding of metabolic processes but in the psychological and behavioral challenges that come with implementing this knowledge.

Why does something so simple prove to be so elusive in practice? The answer lies in how deeply our thoughts, habits, and perceptions shape our relationship with food, motivation, and the very concept of dieting.

For many, the very word "diet" triggers a cascade of negative associations — restriction, deprivation, and even punishment. Simply saying "I'm on a diet" can set up individuals for psychological conflict before they even begin. Consider research by Harris Lieberman and colleagues [3] where participants unknowingly consumed all their calories for the day via a slurried concoction totaling either 313 calories (practical starvation) or 2,294 calories (maintenance). Incredibly, participants reported no significant differences in mood, sleep quality, or mental performance between groups, underscoring the role perception has on shaping experience. The only clear variation was hunger, which makes sense due to it being a natural physiological response to a reduced caloric intake. This suggests that much of the hardship we associate with dieting stems not from physical deprivation, but from the knowledge we are on a diet. Just imagine how people would perceive their dieting experience if they were unaware of their caloric intake!

Reminiscent of the age-old maxim — "perception is reality" — how we interpret our experiences fundamentally shapes our emotional and physiological responses. An example of the power of perception can be seen in a study by Crum et al. [4], where participants were told they were either consuming a high-calorie "indulgent" milkshake or a low-calorie "sensible" one, though both shakes were identical. Those individuals who believed they consumed the indulgent shake reported greater satiety and experienced a larger decrease in the hunger hormone ghrelin. This further highlights a critical truth: how we perceive our actions, especially when it comes to weight loss, matters. When dieting is seen as a sacrifice, it can become an uphill battle. Therefore, framing dieting with purpose such as an act of proper nourishment or empowerment towards a new you instead of a form of deprivation can make the process a more rewarding and sustainable endeavor. 

Adding to the psychological battle even further is the idea of "projection bias," a cognitive distortion where individuals overestimate their ability to handle future challenges. We inherently believe we will make the right choice when the time comes, however we often miscalculate our future discipline when the challenge presents itself, leading our resolve to crumble under the pressure of the moment. This creates a reinforcing cycle of frustration, highlighting the need for strategies that align our planning with realistic expectations of our future selves. In the moment, it's easy to plan on resisting tomorrow's temptations — the cookies in the office breakroom or choosing the sensible option over the indulgent one at dinner with friends — but when hunger and social pressures strike, resolve often crumbles like that cookie you are trying to avoid. The disconnect between the "now you" as you plan and "future you" as you are faced with executing of the plan explains why so many diets fail. Planning with overly optimistic assumptions about future discipline often leads to disappointment and derailment.

In the moment, even with a plan, traditional approaches to dieting frequently rely on willpower, yet this strategy is inherently flawed because it fails to account for the cognitive distortion of projection bias and the finite nature of self-control. By overestimating future discipline, we set ourselves up for repeated mental strain because we're forced to depend on a fatiguable muscle called willpower. Instead it would better serve us to emphasize approaches that minimize reliance on sheer determination. Because willpower is a finite resource, this constant mental tug-of-war between the logical — what we "should" do — and the impulsive desire of — what we "want" to do — is certain to deplete our mental energy over time. Therefore, success lies in designing systems and environments that reduce a reliance on willpower. For instance, removing high-calorie snacks from the home or preparing meals in advance minimizes moments of weakness and reduces decision fatigue, making healthy choices easier by default.

There are practical strategies to help reduce our need for willpower and bridge the gap between intention and action. For example, a study on the snacking behavior of secretaries revealed that proximity to, and, visibility of, foods significantly influenced their consumption [5]. Candy placed within arm's reach was consumed 1.8 times more frequently than candy placed a few feet away, and candy in an open bowl was eaten 2.2 times more often than candy in a closed container. The implication here is clear: reducing access or creating challenges to acquiring unhealthy options is more effective than relaying on sheer willpower or self-control. This can be applied to just about anything that doesn't serve our weight loss goal such as keeping high-calorie foods out of sight — or better yet, out of the house! We're much less likely to drive to the store if we desire something sweet than walking to the kitchen.

Another proven tactic to reduce mental strain is using implementation intentions or simple "if-then" rules to automate decision-making. For example, coming up with the rule of: "If I feel the urge to snack on a cookie at work, I'll drink a glass of water instead." This pre-planned response minimizes the mental effort required to make the most advantageous choice towards achieving your weight loss goal. And because satiety signals respond to volume, a full glass of water may satiate you more than a cookie, allowing you to feel that you're in charge of your weight loss journey. 

Given the limitations of willpower, adopting strategies like pre-planned responses becomes essential in bridging the gap between intention and action. These pre-planned responses not only simplify decision-making but also align with a broader strategy of cultivating mindful habits around food, sharpening awareness of how we engage with our meals and environment.

One additional factor to help with closing the gap between intention and action is to understand our interaction with food itself. Our brains don't have an innate calorie counter; instead, they rely on contextual cues to estimate intake. Distractions, such as watching TV or scrolling on a phone during meals, dull satiety signals and increase the likelihood of overeating. By practicing mindful eating — focusing on each bite and savoring the experience — you can enhance satisfaction and reduce the risk of overconsumption [6].

Beyond these immediate tactics lies a powerful opportunity for deeper change. Reframing the journey as a path of identity transformation creates a bridge between strategies discussed and the mindset needed for long-term success. Rather than viewing weight loss as a temporary endeavor filled with restrictions, aligning it with a broader sense of who you want to become can fundamentally shift your approach. Instead of saying, “I’m on a diet,” consider saying something like, “I’m becoming a healthier person.” This subtle shift in mindset aligns actions with a larger purpose, redirecting the focus from temporary restriction to lasting growth. Carol Dweck, in her book entitled *Mindset *[7], speaks to this approach, emphasizing that "becoming is better than being." In other words, focusing on progress and self-improvement provides purpose to the journey leading to better outcomes than fixating on a specific goal. By prioritizing the establishment of sustainable healthy habits — like hitting a protein goal by eating more whole foods, moving your body regularly outside in the sun, and improving your sleep hygiene — you set the foundation for long-term success.

Purpose is uniquely important, serving as the strongest motivator for behavior change, tying together the psychological challenges and solutions. Victor Frankl, a Holocaust survivor and psychiatrist, observed that “those who have a ‘why’ to live can bear almost any ‘how.’” By connecting weight loss to a meaningful purpose — such as improving health, setting an example for loved ones, or building self-confidence — individuals can reframe their individual journey as one of empowerment rather than a burdensome sacrifice. Shifting the focus from what we are giving up to what we are gaining — such as vitality, strength, quality of life, longevity — makes the trials and tribulations of the process feel more worthwhile and rewarding. Purpose not only provides clarity but serves as a unifying thread that connects practical strategies to the psychological hurdles previously discussed. By rooting the process of weight loss in a meaningful "why," the journey shifts from one of mere behavior modification to a transformative pursuit.

While weight loss may be simple in theory, the practice definitely has its challenges. However, as we have seen, these challenges are not insurmountable. This discussion isn’t meant to be a definitive guide to effortlessly achieve your ideal body because, in truth, that journey is never easy. Instead, the aim here is to create awareness around ideas and systems that work. The first step being awareness — by understanding the hurdles, we can begin to navigate them. Recognizing these obstacles makes them less daunting and allows us to develop personalized strategies that can lead to success. Reframing weight loss as a transformative journey, designing systems to reduce reliance on willpower, creating an environment that supports your goals, and connecting actions to a meaningful purpose transforms the process from one of deprivation to one of empowerment. Success in weight loss, as in any endeavor, requires acknowledging that the sum of your actions has led you to your current position, and the only way forward is an intentional effort and willingness to rewrite your story.

1. Renew Bariatrics, Diet Failure Statistics, https://renewbariatrics.com/diet-failure-statistics/

2. Wing & Phelan, 2005, https://pubmed.ncbi.nlm.nih.gov/15798171/

3. Lieberman et al., 2008, https://pubmed.ncbi.nlm.nih.gov/18779282/

4. Crum et al., 2011, https://pubmed.ncbi.nlm.nih.gov/21574706/

5. Wansink et al., 2006, https://pubmed.ncbi.nlm.nih.gov/16418755/

6. Robinson et al., 2013, https://pubmed.ncbi.nlm.nih.gov/15010185/

7. Dweck, 2006, https://pubmed.ncbi.nlm.nih.gov/30008392/

Craving in the Modern World: How Environmental Disruptions Hijack Our Biology and Drive Overeating

Photo by charlesdeluvio on Unsplash

The conventional narrative of human eating behavior often suggests that we overeat because we are hardwired to crave calories for survival. This view implies that obesity is an inevitable byproduct of evolutionary programming, a relic from our ancestors who needed to store fat for times of scarcity. However, this explanation oversimplifies the complexities of human behavior, psychology, and the modern environment.

As Mark Schatzker argues in The End of Craving, while humans require calories to survive, our biological programming doesn’t inherently drive us to overconsume them. Instead, the environmental disruptions of the modern world manipulate our behaviors, reshape our psychology, and lead to the widespread obesity crisis. The interplay between these factors has created a perfect storm, overriding natural regulatory systems and fostering patterns of overconsumption largely disconnected from biological needs.

Human evolution prioritized efficiency over excess. Early humans lived in environments where food was scarce, and physical activity was constant. While carrying extra fat may have been advantageous during periods of famine, it also came with significant drawbacks. As Schatzker highlights, a greater body mass reduced agility, increased the risk of injury, and made individuals more vulnerable to predators. Excessive weight also hindered the ability to chase and capture prey, diminishing survival odds.

Traits that favored energy balance—efficient use of calories rather than unchecked consumption—were far more advantageous. To support this balance, humans evolved intricate systems of energy regulation, including hunger and satiety signaling, which were fine-tuned for natural food environments. These systems worked well in environments where foods were whole and minimally processed. But today, hyper-engineered food landscapes exploit these systems, disrupting the balance that evolution worked so meticulously to create.

Dana Small, a leading expert in neuropsychology and nutrition science, has shed light on how modern food environments distort our biology. Her research on "nutritive mismatch" reveals how ultra-processed foods hijack the body’s natural regulatory systems. In her groundbreaking experiments, Small demonstrated that when sweetness—a cue for incoming calories—does not align with actual caloric content, metabolic processes falter.

Small created a series of solutions with varying calorie amounts, all designed to taste equivalently sweet, mimicking the caloric content of 75 calories of sugar. Remarkably, only the solution where sweetness matched caloric content triggered the body’s expected metabolic response, efficiently burning the calories. Mismatched solutions—where sweetness falsely signaled caloric content—showed no such response. This disruption, which Small terms “nutritive mismatch,” illustrates how processed foods confuse the body, leaving it unable to metabolize calories effectively. In natural food environments, sweetness reliably indicated energy, and the body responded accordingly. Today, these mismatched cues foster cycles of overconsumption, as the body perpetually chases an equilibrium it can no longer find.

Small’s findings challenge the assumption that overeating is a natural behavior. Instead, they reveal that the modern food environment manipulates our biological systems, encouraging patterns of eating disconnected from genuine physiological needs. This disruption is compounded by the psychological dynamics of craving, a distinction Schatzker emphasizes in his work.

Hunger is a biological drive designed to meet energy needs, while craving is a psychological state driven by the brain’s reward system. Cravings are fueled by dopamine, the neurotransmitter associated with anticipation and reward. In the context of food, dopamine surges in response to cues like the sight or smell of hyper-palatable options, triggering an intense desire to eat. Yet, these foods often fail to deliver the satisfaction the body expects, creating a disconnect between “wanting” and “liking.” This cycle mirrors addiction, where the relentless pursuit of reward becomes disconnected from actual satisfaction.

Repeated dopamine surges condition the brain to seek out ultra-processed foods—not because they nourish, but because they promise a fleeting reward. Over time, this psychological shift transforms eating into a pursuit of gratification rather than a response to hunger. The modern food environment, with its hyper-palatable, mismatched offerings, capitalizes on this vulnerability, driving a feedback loop of overconsumption and dissatisfaction.

The obesity crisis, then, cannot be reduced to an evolutionary imperative to overconsume calories. It is the product of environmental disruptions that exploit human biology and psychology, distorting natural regulatory systems. Small’s research on nutritive mismatch and Schatzker’s insights into craving illuminate the profound impact of these factors, offering a more nuanced understanding of why we overeat in the modern world.

From Fit to Antifragile: Redefining Your Physical Potential

Fitness is a term that has become almost synonymous with health, strength, and physical prowess. When people hear the word, they think of sculpted bodies, grueling workouts, and athletic achievements. But the reality is far more nuanced. Fitness, in its true sense, is not a universal standard; it is entirely contextual. It reflects how well-suited someone is to their current environment and lifestyle. A couch potato is "fit" for their sedentary life, just as a marathon runner is "fit" to endure long distances. A powerlifter is "fit" to hoist enormous weights, but that same fitness may not translate into running a mile or climbing stairs.

This context-specific nature of fitness highlights its limitations. What happens when life demands something outside of your specific realm of fitness? Can you adapt—or even thrive? The answer to this question lies in a concept that transcends fitness altogether: antifragility.

The term "antifragility" was popularized by Nassim Taleb in his book Antifragile: Things That Gain from Disorder. It describes systems that don't just withstand stress—they grow stronger because of it. Taleb illustrates this concept with a striking analogy. Imagine a wine glass in a box. If the box is shaken, the fragile wine glass shatters under stress. A robust object, like a plastic cup, survives the shaking unscathed, but it doesn’t benefit from the experience. Antifragile systems, however, thrive under stress. Picture a box of firewood. When shaken, the logs settle more tightly together, creating a stronger, more efficient structure. The more they are shaken, the better they perform.

Fitness, as we commonly define it, is often robust but rarely antifragile. It reflects where you currently stand on the spectrum of physical capability but doesn’t necessarily mean you’re prepared to grow beyond that point. Antifragility, on the other hand, is about transformation—using challenges and stressors to push past your current limits and develop greater capacity, strength, and resilience.

To understand how fitness and antifragility differ, it’s important to consider the idea of specialization. Fitness is often seen through the lens of specific achievements: the marathoner who can run for hours, the powerlifter who can bench press twice their body weight, or the office worker who can sit comfortably at a desk for eight hours. Each of these individuals is fit for their unique context, but specialization has its drawbacks. The marathoner might struggle with basic upper-body strength. The powerlifter might lack cardiovascular endurance. Even the office worker, while fit for their sedentary life, may be one flight of stairs away from gasping for air.

This narrow focus on contextual fitness leaves people vulnerable. True growth—both physical and mental—requires the ability to adapt to challenges outside of one’s comfort zone. This is the essence of antifragility. It’s not about being the best at one thing; it’s about becoming stronger, more capable, and more adaptable across a range of challenges.

Achieving antifragility requires a mindset shift. It means embracing the discomfort and uncertainty that come with growth. It’s about understanding that failure is not the opposite of success but a necessary step toward it. Unfortunately, this concept often gets lost in modern fitness culture. Commercial gyms cater to convenience and accessibility, and many trainers focus on delivering quick fixes rather than lasting change. The result is a diluted version of what training should be—one that emphasizes short-term goals over long-term development.

Antifragile training stands in stark contrast to this approach. It is rooted in intentionality. Every rep, every set, every exercise has a purpose: to push you beyond your current limits and help you ascend to the next level of capability. This approach incorporates principles like progressive overload, purposeful execution, and training to failure. It’s about doing more than just going through the motions. It’s about training with intention and understanding the "why" behind every movement.

In practice, antifragile training focuses on progressive overload—gradually increasing the weight, reps, or intensity of your workouts to stimulate growth. It emphasizes purposeful execution, ensuring that every movement is controlled and deliberate. It includes moments of pushing to failure, where you reach the point of complete muscle fatigue, and it encourages adaptability by incorporating variety in exercises, tempos, and ranges of motion. This approach isn’t easy, but nothing worth having ever is.

The mental toughness required to embrace antifragile training is as important as the physical effort. It’s not for the faint of heart or the weak-minded. It demands commitment, resilience, and a willingness to endure discomfort in pursuit of growth. But for those who are ready to take on the challenge, the rewards are transformative. Antifragile training doesn’t just prepare you for the demands of today; it equips you to handle the unexpected challenges of tomorrow.

This concept has profound implications for the fitness industry. Most people who say they want to "get fit" don’t realize they’re actually seeking antifragility. They want to climb higher on the spectrum of fitness, but they also want the ability to adapt and grow stronger in the face of adversity. By reframing fitness as a dynamic process rather than a static state, we can help people achieve more than they thought possible.

The shift from fitness to antifragility isn’t just about redefining physical capability; it’s about rethinking the journey itself. Fitness is a snapshot of where you are right now. Antifragility is the process of becoming something more. It’s about recognizing that the journey is as important as the destination. Each challenge, each setback, and each victory contributes to your growth, making you not just fit for your environment but capable of thriving in any situation.

So the next time you step into the gym, ask yourself: Are you simply maintaining your current level of fitness, or are you pushing toward something greater? The choice is yours. Let’s redefine what it means to be strong. Let’s embrace the discomfort. Let’s train with intention. Let’s become antifragile.

The Unseen Influence: How Our Environment Shapes Health, Choices, and Well-Being

Looking back just fifty years, the Western world appeared markedly different. A simple glance at a photograph from a beach in the 1970s shows almost everyone looking slim by today’s standards. What changed? Over the decades, we replaced a food system based on fresh ingredients with one dominated by processed, calorie-dense foods. We shifted from a life spent enjoying the outdoors, basking in natural light, to one where the only warmth we feel often comes from the glow of our screens. We designed cities that are almost impossible to walk or bike around, building a world that prioritizes cars and convenience over movement. We created a fast-paced, stress-filled lifestyle that encourages comfort eating and makes sedentary behavior the default. Our collective environment shifted—and this shift, more than any individual failing, has left us with a legacy of declining physical and mental health.

When we talk about 'environment,' we’re not just referring to the physical spaces we inhabit, like our homes or workplaces. Our environment also includes the broader context—everything from the social norms around us to the foods most readily available, the lighting we’re exposed to, and even the technologies we interact with daily. Together, these factors shape our choices, behaviors, and ultimately, our health.

When we look in the mirror, we’re often quick to blame ourselves for the state of our health or well-being. If we gain weight, we assume it’s due to a lack of willpower or self-discipline. We think, “If only I had chosen healthier foods, exercised more, or practiced better self-control.” But as Benjamin Hardy argues in Willpower Doesn’t Work, this focus on personal willpower as the primary tool for change overlooks a crucial element: our environment. He asserts that environment—not sheer willpower—is the invisible force that shapes our choices, habits, and ultimately our health. Indeed, the choices we think are fully our own are often deeply influenced by our surroundings, and any real, lasting change requires altering the conditions that continuously shape our behavior.

Psychologist Dr. Wendy Wood, a leading expert on habits and behavior, supports this view with research demonstrating that habits are not isolated acts of self-control but are deeply tied to cues in our environment. Wood’s research shows that we may feel autonomous, yet our behavior is “very integrated with” the triggers in our environment. She explains that habits allow us to perform routine actions without consciously thinking, which is efficient but can also reinforce behaviors we might want to change. When we’re surrounded by cues that trigger unhealthy behaviors, we can’t expect sheer willpower alone to overcome them. To change, we must disrupt the environment itself.

Consider how this concept applies to health and weight loss. The diet industry largely focuses on personal responsibility, teaching us that if we eat the wrong foods or gain weight, it’s our fault. We’re told to “choose better” or “control cravings” without acknowledging that, for most people, willpower alone can’t undo a toxic environment. In an age where food engineering creates highly addictive flavors, where high-stress lifestyles encourage comfort eating, and where sedentary work setups make physical activity challenging, individuals are set up to fail if they rely solely on self-discipline. As Hardy and Wood suggest, genuine change requires altering these environmental cues—whether that’s changing the types of food we keep in our homes, rearranging our workspaces to encourage movement, or reducing our exposure to stress-inducing stimuli.

The powerful link between environment and behavior extends beyond physical health. Dr. Wood’s research, alongside Hardy’s insights, shows how even addiction can often be traced back to environmental triggers. The behaviors and patterns that lead to substance dependency or unhealthy relationships with food are, to a significant extent, a reflection of the environments and social circles we find ourselves in. These environments influence not only our behaviors but also our identity and self-concept. For instance, someone in a social circle that normalizes sedentary living and fast-food consumption will find it harder to adopt an active lifestyle and healthier diet, not just because of internal resistance, but because the environment subtly pushes against it.

Hardy puts it best: “To a certain extent, your life is not a reflection of your deepest-held values and beliefs but of the social norms that surround you.” The same is true for anyone trying to overcome a harmful habit. If they remain in an environment that reinforces the behavior they’re trying to break, they have two choices: either conform to a negative influence or resist it through willpower alone. Both paths are grueling, and often, neither is sustainable. This insight is also underscored by Dr. Wood, who suggests even small adjustments in routines—such as eating with a nondominant hand—can disrupt habitual behavior patterns by forcing us to become more mindful. It’s in this brief moment of awareness that change becomes possible.

Perhaps one of the most powerful ways to think about the impact of environment on health is through the metaphor of cells. Just as cells in a body thrive in healthy environments and struggle in unhealthy ones, humans too reflect the environments they inhabit. If you’re surrounded by environments that foster health, positive habits are almost a given. But if you’re entrenched in environments that lead to stress, poor eating, and inactivity, expecting sustained health and happiness is a near-impossible battle. In other words, you cannot achieve health in the same environment that made you sick in the first place.

There’s also a deeply ingrained idea in society that we are products of our choices rather than our circumstances. But Hardy argues that this belief, while comforting, is incomplete. Our environment heavily shapes our thoughts, which in turn guide our choices. If we read books, have experiences, and surround ourselves with people who reinforce a certain set of values, those values begin to shape how we think and act. In contrast, when we remain in environments that conflict with our personal goals or values, we may struggle to become the people we aspire to be. True change, then, is often not about forcing ourselves to make different choices but about surrounding ourselves with a setting that naturally leads to those choices.

As Dr. Wood notes, even the act of changing small cues in our environment can make a significant difference. For someone trying to lose weight, for instance, this might mean rearranging the pantry to prioritize healthy foods or setting up spaces for activity instead of inactivity. This creates a moment of reflection—an opportunity to pause and choose a new action rather than following an ingrained response. By actively managing our surroundings, we gain leverage over our habits, bypassing the limits of willpower.

So what does this mean for each of us? It’s an invitation to rethink the idea that change is simply a matter of trying harder or being better. Instead, the question becomes: How can you reshape your environment to support the goals you want to achieve? This shift in perspective moves us from self-blame to empowerment. Rather than seeing ourselves as weak for struggling, we can take practical steps to create spaces that foster health, focus, and resilience.

If you’re interested in transforming your environment to support better health and well-being, I can help you make strategic changes that align with your goals. Together, we’ll assess the environments you encounter daily—from your home and workspace to your social settings—and create actionable steps to make these places more conducive to the habits and lifestyle you envision. After all, health is less about willpower and more about building an environment that works with you, not against you. Let’s create a foundation where health isn’t just possible; it’s inevitable.

Hooked on Screens: The Hidden Health Costs of Digital Technology

In the digital age, technology has transformed how we live, work, and connect. The convenience and connectivity it provides are undeniable, yet these advantages come with complex, often hidden costs to our mental and physical health. Far from being neutral tools, digital devices are strategically designed to capture attention, hijack biological rhythms, and promote behaviors that can undermine well-being. Increasingly, research is uncovering the mechanisms by which technology influences our brains, bodies, and environments, raising questions about the long-term implications of modern digital habits. This essay explores the multi-layered effects of digital technology on health, from dopamine-driven attention capture and blue light disruption to physical and social consequences of screen-centric lifestyles.

Dopamine Manipulation and the Attention Economy

One of the most profound ways technology affects us is through the manipulation of dopamine, the neurotransmitter involved in motivation, reward, and pleasure. Johann Hari, author of Stolen Focus, argues that social media platforms and mobile apps capitalize on the brain’s dopamine pathways to capture attention and drive engagement. Unlike predictable rewards, which produce steady dopamine levels, technology uses intermittent reinforcement—a reward system where notifications and likes appear unpredictably—to create a cycle of anticipation and reward. This system, which is the same mechanism that drives gambling addiction, keeps users engaged by providing an irregular schedule of dopamine hits that reinforces repeated use.

Scientific research underscores this connection. A study published in Addictive Behaviors found that the unpredictable rewards offered by social media trigger dopamine surges, reinforcing compulsive checking behaviors. This constant need for validation and novelty compels users to return to their devices frequently, creating dependency. By design, social media platforms keep users engaged by leveraging the brain’s reward circuitry, with the aim not merely of providing a positive experience but of maximizing time spent on the platform. This is further substantiated by a 2022 report from the Pew Research Center, which found that the average American spends about seven hours a day engaging with screens. This level of usage erodes the capacity for sustained attention, driving a culture of perpetual distraction.

The implications of this dopamine-driven engagement go beyond reduced productivity; it shapes the way we experience pleasure, satisfaction, and meaning. Studies have shown that over-reliance on digital rewards can lead to desensitization, where natural, offline activities feel less enjoyable or fulfilling. Psychologist Dr. Anna Lembke, author of Dopamine Nation, explains that when people are constantly exposed to high-dopamine activities—such as scrolling through social media feeds or checking notifications—the brain begins to downregulate dopamine receptors, leading to a state of “dopamine deficit.” In this state, individuals feel compelled to seek more intense stimuli to achieve the same level of satisfaction, fostering a cycle of dependency and dissatisfaction. This dependency not only fragments attention but also disrupts daily life, reducing time for meaningful, real-world interactions.

The Impact of Blue Light and Circadian Disruption

Beyond attention, digital devices also impact our health through prolonged exposure to artificial blue light, which is emitted by screens and LED lights. Blue light exposure, especially in the evening, disrupts the body’s natural circadian rhythms by delaying the production of melatonin, the hormone that signals readiness for sleep. In natural environments, blue light primarily comes from sunlight, which balances it with red and infrared light and diminishes as the day progresses. However, modern devices emit isolated blue light without these balancing wavelengths, creating a signal that mimics daylight, even at night.

Dr. Alexis Cowan highlights the significance of blue light exposure from digital devices, explaining that our bodies are not biologically adapted to handle the intensity and timing of this exposure. The result is often delayed sleep onset, reduced sleep quality, and diminished cognitive function the following day. A study published in the Journal of Clinical Sleep Medicine confirms that evening screen time disrupts melatonin release, leading to poorer sleep quality and subsequent health issues. Over time, sleep deprivation can lead to an array of health complications, including weakened immune function, increased risk of obesity, and a heightened likelihood of developing chronic diseases like diabetes and cardiovascular disorders.

The effects of circadian disruption extend to mental health as well. Inadequate sleep is linked to increased anxiety, mood disorders, and cognitive impairment. Furthermore, a 2020 survey by the National Sleep Foundation revealed that 60% of Americans who use screens before bed report sleep disturbances. This trend not only reveals a personal challenge for each affected individual but also speaks to a structural issue embedded in the design of our digital environments. If left unaddressed, the widespread nature of sleep disruption has the potential to affect entire communities, resulting in productivity loss, mental health issues, and an increased burden on healthcare systems.

Physical Health Impacts and Mitochondrial Stress

The modern reliance on digital devices has also led to more sedentary lifestyles, which negatively affect physical health. As people spend more time sitting in front of screens, physical activity diminishes, which can contribute to metabolic syndrome, obesity, and cardiovascular disease. This shift to sedentary living is compounded by the impact of blue light on mitochondrial function. Mitochondria, the energy-producing organelles within our cells, are highly sensitive to light exposure. While red and infrared light, commonly present in natural sunlight, stimulate mitochondrial activity and aid cellular repair, blue light in isolation has been shown to induce oxidative stress, which impairs mitochondrial efficiency and accelerates cellular aging.

Research published in Cell Metabolism links prolonged blue light exposure to increased oxidative stress in mitochondria, particularly in tissues like the skin and eyes. This form of cellular stress contributes to chronic fatigue, reduced resilience, and an increased risk of age-related diseases. Dr. Jack Kruse, a neurosurgeon and proponent of light biology, argues that prolonged screen exposure contributes to mitochondrial dysfunction, a condition linked to chronic diseases such as obesity, heart disease, and neurodegenerative disorders. The consequences are far-reaching; as mitochondrial health declines, so does the body’s ability to generate energy, fight infections, and repair tissues, leaving individuals more vulnerable to physical and mental health challenges.

Loss of Real-World Connections and Mental Clarity

As screen time has become ubiquitous, the quality of human interaction has fundamentally shifted. Johann Hari notes that the convenience of digital communication often comes at the expense of real-world connections, which offer emotional fulfillment and mental clarity. Face-to-face interactions trigger the release of oxytocin, the hormone responsible for trust and social bonding. This hormone is crucial for emotional health, as it fosters empathy, strengthens relationships, and reduces stress. However, virtual interactions, which lack the sensory depth of in-person contact, fail to stimulate oxytocin release, leaving people feeling socially unfulfilled.

Research in Cyberpsychology, Behavior, and Social Networking reveals that individuals who spend excessive time on social media report higher levels of loneliness and depression compared to those who engage more in-person interactions. While digital platforms may simulate social connectivity, they often fail to meet the deeper emotional needs that face-to-face interactions fulfill. The shift toward virtual interactions has contributed to a growing sense of social isolation, as people substitute screen-based exchanges for genuine connection. This trend is particularly pronounced among young people, who may have never experienced socialization without the influence of digital devices.

In addition to reducing social satisfaction, excessive screen time strains cognitive health. Digital multitasking, the frequent switching between apps, notifications, and messages, impairs memory, weakens focus, and increases mental fatigue. A study from Human Factors found that individuals who frequently multitask on digital platforms experience reduced working memory capacity, which is essential for problem-solving and emotional regulation. Over time, these effects compound, reducing mental clarity and making it harder for individuals to engage deeply with tasks or thoughts. This digital dependency also erodes self-reflection and mindfulness, as people have fewer opportunities for uninterrupted, introspective moments.

Health Consequences of Modern Design Choices

The pervasiveness of screen-based environments and artificial lighting in daily life reflects broader design choices that prioritize convenience and efficiency over health. Indoor lighting, dominated by blue wavelengths, has become the norm in workplaces and homes. While energy-efficient, LED and fluorescent lighting disrupt circadian rhythms by signaling wakefulness to the brain, even during the evening. As Dr. Cowan points out, this type of lighting reduces melatonin production, which not only impairs sleep but also increases the risk of chronic health issues like cardiovascular disease and obesity. The effects of this disruption are cumulative, as exposure to blue light extends beyond screens to nearly every indoor environment.

Modern workspaces and personal environments often promote prolonged sitting, further undermining physical health. Studies have shown that sedentary behavior is associated with an increased risk of metabolic syndrome and cardiovascular disease, as movement, once naturally incorporated into daily life, now requires intentional planning. This lack of movement affects not only physical health but also cognitive function, as exercise has been shown to enhance mental clarity and reduce symptoms of anxiety and depression. The absence of movement, combined with prolonged screen time, fosters a sense of physical and mental stagnation.

Additionally, modern design choices reduce opportunities to engage with natural environments, which have restorative effects on stress and well-being. Natural settings, even in small doses, can reduce cortisol levels, improve mood, and boost cognitive resilience. However, urban spaces dominated by screens, artificial lighting, and sedentary layouts limit access to nature, reducing opportunities for the kind of recovery that outdoor environments offer. The design of indoor and urban environments has created a lifestyle that may feel efficient and productive but is fundamentally misaligned with human biology. The absence of natural light, movement, and nature exposure fosters a sense of disconnection from our bodies and surroundings, ultimately compromising both mental and physical health.

Conclusion

The intricate relationship between digital technology and health reveals a paradox: while technology promises connection, convenience, and efficiency, its design often undermines well-being in profound ways. From dopamine-driven attention traps to the disruptive effects of artificial blue light, the digital landscape shapes behaviors and environments that are misaligned with human biology. As we increasingly rely on digital devices for work, socialization, and entertainment, we must recognize the health implications of screen-centric lifestyles. The science is clear: extended screen time affects sleep, disrupts circadian rhythms, promotes sedentary behavior, and erodes real-world connections—all of which contribute to a range of physical and mental health challenges.

Johann Hari’s insights into the “attention economy” highlight how digital platforms exploit dopamine to capture attention, driving cycles of addiction-like engagement. The resulting dependence on digital rewards fragments our focus, detracts from meaningful real-world interactions, and even reshapes how we experience pleasure. Similarly, Dr. Alexis Cowan and Dr. Jack Kruse’s work underscores the health consequences of blue light exposure, which disrupts sleep and strains mitochondrial function. These biological effects, compounded by the sedentary nature of screen-based environments, increase susceptibility to chronic diseases and weaken overall resilience.

The consequences of our digitally driven lifestyles extend beyond individual well-being to societal health, affecting productivity, social cohesion, and healthcare costs. If these trends continue unchecked, we may face a future in which chronic diseases, mental health disorders, and social isolation become the norm. However, the same technology that contributes to these challenges also holds potential solutions. By prioritizing health-conscious design choices—such as implementing blue light filters, encouraging breaks for physical movement, and promoting digital mindfulness—we can create a more balanced relationship with technology. Ultimately, aligning our environments and routines with the natural rhythms of human biology may offer the most effective path toward a healthier, more connected, and more fulfilling future.

The Power of Questions: Transforming Intentions into Actions for Healthier Habits

We all make commitments we fail to honor. How many times have you said, ‘I’ll stick to my diet plan this month’ or ‘I’ll cut down on sugar starting today’, only to find yourself straying from these goals? While we often intend to follow through, good intentions alone aren’t sufficient to create meaningful change. However, a well-designed question might just be the key.

After analyzing over 100 studies covering 40 years of research, a team of scientists from four US universities found that asking questions is more effective than making statements when it comes to influencing your own or someone else’s behavior.

David Sprott, a co-author of the research from Washington State University, noted: ‘If you question a person about performing a future behavior, the likelihood of that behavior happening will change.’ Questions trigger a psychological response that differs from the response to statements.

This means, for example, that a sign that says, ‘Please choose healthy food options’ is less likely to influence its viewers’ dietary choices than a sign that asks, ‘Will you choose healthy food options today?’ Telling yourself ‘I will drink more water’ is less effective in changing your behavior than asking yourself, ‘Will I drink more water today?’

Remarkably, the researchers discovered that transforming a statement into a question could influence a person’s behavior for up to six months.

The question/behavior effect is particularly potent with questions that can be answered with a simple yes or no.

The question/behavior effect is most powerful when questions are used to encourage behavior that aligns with the receiver’s personal health goals (answering yes to the question would bring them closer to their desired fitness and nutrition objectives).

Starting the question with ‘will’ implies ownership and action, making the question/behavior effect even stronger than beginning your question with words like ‘can’ or ‘could’, which suggest capability rather than action. It’s also more effective than starting your question with ‘would’, which is conditional and implies possibility rather than probability.

Why Nutrient Supplementation is Essential for Modern Diets

Our existence depends on what the earth offers. 

The foundation of human nourishment comes from plants, which supply vital macronutrients such as proteins, fats, and carbohydrates, all generated through the nourishment obtained from the earth. Additionally, plants give us crucial micronutrients, including vitamins produced through photosynthesis and minerals extracted from the soil, both of which are essential for maintaining healthy cellular functions.

Vitamins and minerals play a crucial role in enzymes and coenzymes (enzyme helpers), acting as biological catalysts that accelerate chemical reactions needed for cellular operations. They collaborate to either combine molecules or break them down in countless chemical reactions that occur within living cells. In essence, life would not be possible without enzymes and their vital vitamins and minerals.

Considering this, the equation is straightforward: plants cannot produce minerals; they must absorb them from the soil. Thus, without minerals, vitamins cannot function effectively. As a result, if crucial minerals are depleted from our soil, they are also diminished in our bodies.

A continuous deficiency of minerals can lead to illness. Therefore, it is not surprising that any decline in the mineral and nutrient content of our soils results in a corresponding increase in nutrition-related diseases among both animal and human populations.

The alarming fact is that foods -- fruit, vegetables and grains -- now being raised on millions of acres of land that no longer contain enough of certain needed nutrients, are starving us -- no matter how much we eat of them.

—US Senate Document 264

Surprisingly, the statement mentioned earlier was made almost 80 years ago, in 1936. Since then, the United States and other industrialized countries have been experiencing an unprecedented loss of fertile land. Today, the topsoil in the US is eroding at a rate ten times faster than it can be replenished. In regions like Africa, India, and China, soil erosion surpasses the replenishment rate by 30 to 40 times. Current projections indicate that our global topsoil reserves will last less than 50 years. As topsoil diminishes, so do essential nutrients, and consequently, our health suffers.

Data presented at the 1992 RIO Earth Summit revealed that throughout the 20th century, mineral depletion of global topsoil reserves was widespread. During this period, agricultural soils in the US and Canada lost 85% of their mineral content; Asian and South American soils saw a 76% decrease; and in Africa, Europe, and Australia, soil mineral content declined by 74%. Since then, little has been done to prevent the inevitable depletion of these invaluable mineral resources.

In March 2006, the United Nations acknowledged a new form of malnutrition: multiple micronutrient depletion. According to Catherine Bertini, Chair of the UN Standing Committee on Nutrition, those who are overweight are just as malnourished as those who are starving. Ultimately, the problem lies not in the amount of food consumed, but in its quality.

Modern Agriculture Depletes Our Soil

The topsoils of the earth form a thin layer of mineral-rich, carbon-based material. They serve as buffers and filters for water and air pollutants, store vital moisture and essential minerals and micronutrients, and act as critical reservoirs for carbon dioxide and methane. Apart from global warming, soil degradation poses a severe threat to the long-term environmental sustainability of our planet.

Soil depletion was well recognized in ancient societies, which would either relocate to new lands every few years or enrich the soil with organic waste. In more recent history, the westward migration of Europeans to the New World saw families relocating frequently as their dry-land farming practices repeatedly exhausted the soil. The first indication of nutrient depletion was not crop failure but an increase in illness and disease among both animals and humans dependent on the land. Those who did not abandon their farms or practice soil replenishment experienced inevitable declines in crop production, eventually leading to complete land collapse, as seen in the Dust Bowl of the 1930s.

Now, there is nowhere else to go. We can no longer move to greener pastures because none remain. We must work with what we have; soil erosion, contamination from industrial pollutants, and depletion of our finite mineral resources have become global issues. Yet, modern agricultural practices continue to consume water, fuel, and topsoil at alarmingly unsustainable rates, seemingly disregarding nature's imperative to return what we have taken from the earth. Instead of renewing and restoring our soils, commercial agriculture has disrupted nature's natural cycles, and the consequences will be costly.

Depleted Soils, Depleted Crops

Soil depletion due to unsustainable agricultural practices leads to an inevitable decline in the nutrient content of our crops. Historical records indicate that the average mineral content of vegetables grown in US soils has decreased significantly over the last century. A 2004 study published in the Journal of the American College of Nutrition found considerable declines in the mineral and vitamin content of 43 garden crops grown in US markets. Additionally, a 2001 report by the Life Extension Foundation revealed that the vitamin and mineral content of various foods declined dramatically between 1963 and 2000. Collard greens experienced a 62% loss of vitamin C, a 41% loss of vitamin A, and a 29% loss of calcium, while potassium and magnesium decreased by 52% and 84%, respectively. Cauliflower lost nearly half of its vitamin C, thiamine, and riboflavin, and most of the calcium in commercial pineapples had almost vanished.

The US data supports findings for vegetable crops grown between 1940 and 2002 in Great Britain, which show mineral losses ranging from 15% to 62% for common minerals and trace elements. In an earlier study, harmful changes were found in the natural ratio of minerals, such as calcium and magnesium, in the foods tested. Similarly, a Canadian study found significant declines in the nutrient content of produce grown over a 50-year interval to 1999. During that time, the average Canadian potato lost 57% of its vitamin C and iron, 28% of its calcium, 50% of its riboflavin, and 18% of its niacin. The same trend was observed for all 25 fruits and vegetables analyzed. The Canadian data showed that nearly 80% of the foods tested displayed large drops in their calcium and iron content, three-quarters showed considerable decreases in vitamin A, half lost vitamin C and riboflavin, and one-third lost thiamine.

Selective breeding of new crop varieties prioritizing yield, appearance, and other commercially desirable traits has also contributed to the depletion of the nutritional value of our foods. Dr. Phil Warman of Nova Scotia's Agricultural College contends that the emphasis on appearance, storability, and yield, with little or no focus on nutritional content, has significantly exacerbated the overall nutrient depletion of our food. The USDA standards for fruits and vegetables only account for size, shape, and color, neglecting nutritional value. With such standards, it is not surprising that today, one would need to eat eight oranges to obtain the same amount of vitamin A that their grandparents got from a single orange.

Nutrient Depletion in Soils: Causes and Consequences

Soil erosion by wind and water is exacerbated by over-cultivating, over-grazing, and the destruction of natural ground cover. The loss of organic matter leads to a corresponding decline in nitrogen, minerals, and trace elements, as well as a reduction in the soil's ability to retain moisture and support healthy plant growth. High-yield crops further strain the limited nutritional capacity of our depleted soils. For instance, in 1930, an acre of land yielded about 50 bushels of corn, while by 1960, yields reached 200 bushels per acre—far exceeding the soil's capacity to sustain itself.

Erosion, combined with high-yield nutrient extraction, also depletes the soil of its alkalizing minerals (calcium, potassium, and magnesium), resulting in the loss of natural buffering capacity and an increase in soil acidity. Conversely, over-irrigation with hard (alkaline) water can cause some soils to leach essential minerals while accumulating others (such as calcium), making the soil too alkaline for crop growth.

Although nitrate, phosphate, and potassium (NPK) fertilizers, introduced in the early 1900s, substantially increase crop yield, they come at a high cost. Overuse of these chemical fertilizers has been found to accelerate the depletion of other vital macronutrients and trace elements while reducing their bioavailability to plants. NPK fertilizers gradually decrease soil pH, making soils too acidic to support beneficial bacteria and fungi. These symbiotic organisms aid plants in absorbing nutrients from the soil. Once absent, plants' micronutrient uptake is significantly impaired. Additionally, NPK application in acidic soils has been found to bind soil-based selenium, rendering it unavailable for root absorption.

Using NPK fertilizers to replenish primary growth-promoting nutrients fails to address the simultaneous losses of valuable micronutrients and trace elements (such as copper, zinc, and molybdenum) in intensively cultivated soils. According to Dr. William Albrecht of the University of Missouri, using NPK fertilizers ultimately leads to malnutrition, insect infestations, bacterial and fungal attacks, weed encroachment, and crop loss in dry weather. Albrecht argues that employing chemical fertilizers to increase yield weakens the crop, making it more vulnerable to pests and diseases. As a result, commercial farmers have no choice but to depend on a range of dangerous and harmful chemical pesticides to protect their crops and investments.

Nutrient Depletion Forces Pesticide Abuse: Consequences and Solutions

The decline of soil and crop health due to unsustainable commercial agricultural practices leads to a vicious cycle of dependence on pesticides and herbicides. The highly toxic organochlorine (OC) and organophosphorus (OP) derivatives damage our soils by killing symbiotic bacteria and fungi responsible for nutrient uptake in plants, inactivating essential enzyme systems within plant roots involved in mineral absorption, and destroying soil microorganisms needed to produce organic mineral complexes that naturally replenish the soil.

Moreover, these environmental toxins end up in our food, causing widespread human exposure to pesticides primarily through consumption. There is ongoing debate about whether low levels of exposure to these persistent environmental toxins and their residues can cause harm. Some studies have found harmful biological effects resulting from chronic environmental exposure, while others have reported harmful synergistic effects from combinations of pesticides and chemical agents at typical levels of environmental exposure.

Pesticides and herbicides have been linked to various human health effects, including immune suppression, hormone disruption, reduced intelligence, reproductive abnormalities, neurological and behavioral disorders, and cancer. They can also act as potent endocrine hormone disruptors and easily pass through the placenta to unborn infants, who are especially vulnerable to toxins that disrupt the developmental process. Children are particularly susceptible to these agents due to their higher food intake relative to body weight and their still-developing immune systems.

To protect ourselves and our children, it is crucial to choose sensible dietary alternatives to commercially grown and processed foods, which are the primary sources of pesticide and herbicide exposure. Some ways to reduce exposure include:

1. Buying organic produce: Organic farming practices avoid the use of synthetic pesticides and herbicides, reducing the potential for toxin exposure through food consumption.

2. Washing and peeling fruits and vegetables: Thoroughly washing and peeling produce can help remove some pesticide residues on the surface.

3. Eating a diverse diet: Consuming a variety of foods can help minimize the risk of exposure to a single pesticide or a group of related pesticides.

4. Supporting sustainable agriculture: Encourage and support agricultural practices that prioritize soil health, biodiversity, and environmental sustainability.

By making informed choices, we can help reduce our exposure to harmful pesticides and herbicides while promoting agricultural practices that preserve soil health and protect our environment.

Organic Agriculture Improves Nutrient Content: Benefits and Considerations

Throughout most of human history, agriculture has relied on organic growing practices. However, over the past 100 years, synthetic chemicals and their destructive consequences have been introduced to the food supply. Thankfully, more and more progressive growers are abandoning commercial growing techniques and returning to organic methods and traditional soil care.

Organic gardening utilizes natural mulching and cultivation techniques that nourish the soil rather than the plant. This approach replenishes nutrients lost through plant growth and fosters the growth of beneficial fungi, nitrogen-fixing bacteria, and other advantageous microorganisms. Healthy living soil encourages the symbiosis of plants with these soil microbes, enhancing the transfer of essential nutrients into the plants. Organic agriculture, unlike conventional agriculture, respects the natural replenishing cycles of nature.

A 2003 study in Seattle, Washington, found that children aged two to four who consumed organically grown fruits and vegetables had urine levels of pesticides six times lower than those who consumed conventionally grown foods. The study's authors concluded that consuming organic fruits, vegetables, and juices could reduce children's exposure levels to below the EPA's current guidelines, thus moving exposures from a range of uncertain risk to a range of negligible risk.

A growing body of evidence supports the health-promoting effects of organically grown foods. Studies have shown that organic crops have higher levels of vitamin C, iron, natural sugars, magnesium, phosphorus, and other minerals and lower levels of harmful nitrates than conventional crops. An independent review published in the Journal of Complementary Medicine found that organically grown crops had significantly higher levels of nutrients for all 21 nutrients evaluated compared to conventionally grown produce. Organically grown spinach, lettuce, cabbage, and potatoes exhibited particularly high mineral levels.

Research by the University of California (Davis) revealed that organically grown tomatoes and peppers had higher levels of flavonoids and vitamin C than conventionally grown tomatoes. The health-promoting effects of these secondary plant metabolites, produced by plants to protect themselves from oxidative damage caused by strong sunlight, are well-established. High-intensity conventional agricultural practices seem to disrupt the production of these natural plant metabolites, resulting in reduced flavonoid content in conventional crops. In contrast, organic growing practices stimulate the plant's defense mechanisms, leading to increased production of these vital botanical nutrients. Organic crops, which are not protected by pesticides, have higher levels of flavonoids than conventional crops, including up to 50% more antioxidants. A prime example is the polyphenol content of red wine: this heart-healthy nutrient is found in much higher concentrations in wine made from organically grown grapes, which produce the nutrients to protect against a naturally occurring fungus that attacks grape skins.

Conclusion

In conclusion, the modern lifestyle and reliance on commercial, chemically based agriculture have led to the degradation of the nutritional value of our food supply and increased our exposure to environmental toxins. As a result, many people are not meeting their daily nutritional requirements, even if they consume the recommended servings of fruits and vegetables.

To counter these challenges and ensure a healthy diet, consider the following recommendations:

1. Opt for organic produce whenever possible to reduce exposure to chemical pesticides and benefit from the higher nutrient content found in organically grown foods.

2. Complement your diet with high-quality nutritional supplements to ensure you meet your daily nutritional requirements, particularly if you struggle to consume the recommended servings of fruits and vegetables.

3. Practice mindful eating habits, including consuming a diverse and balanced diet rich in whole, unprocessed foods.

4. Stay informed about the source of your food and support sustainable and responsible agricultural practices that prioritize the health of the environment and consumers.

By making informed choices about the food we consume and the agricultural practices we support, we can help protect our health and the environment while enjoying the benefits of a nutrient-rich diet.

Sit-Ups wont give you a Sixpack

Hundreds of thousands of men and women are still doing crunches till they're blue in the face, with or without miracle machines from Tell Sell, in the hope of gaining a slimmer waist or a washboard stomach. Impossible, say trainers. And a study published in the Journal of Strength and Conditioning Research proves them right again.

Localized fat loss
No, say trainers, you can't lose fat in specific places by training. You can only lose fat. If you are burning more energy than you consume via food, your body breaks down fat everywhere it can, and sooner or later you'll see the benefits in the places you most want to see the fat melting away.

Researchers have done countless experiments in which subjects do sit-ups and crunches, and measured the amount of subcutaneous fat that disappeared around their waste - with no result.

American sports scientists repeated these studies briefly by getting 14 non-active people in their twenties with stable bodyweight to train their abdominal muscles for six weeks consecutively. The subjects had to do a workout for their middle section five times a week. The workout consisted of seven exercises, with two sets of ten reps for each.

A control group of ten people in their twenties did nothing in those six weeks.

Results
The table below shows that the ab training [Exercise] did not result in any statistically significant changes in the bodyweight, total fat mass or the android fat mass. Android fat is the fat in the torso: around the abdomen, chest, shoulders, neck and back. At the end of the six weeks the test subjects were capable of doing more crunches.

Conclusion
"Abdominal exercise training was effective to increase abdominal strength but was not effective to decrease various measures of abdominal fat", the researchers conclude.

"Some individuals attempt to reduce their waistline by solely performing abdominal exercises possibly because of claims made by various abdominal equipment advertisements. The information obtained from this study can help people to understand that abdominal exercise alone is not sufficient to reduce waistline or subcutaneous abdominal fat."

Source: J Strength Cond Res. 2011 Sep;25(9):2559-64.

A Case for the Hyperextension

Why you should include the hyperextension in your workouts

In many gyms, the hyperextension has a bit of a therapeutic image. If you do this exercise, it is because your physical therapist has advised you to. But real members of the iron tribe who do not need a physiotherapist, of course, do not do the hyperextension. They are going to deadlift. Yes right? Thought wrong, Norwegian sports scientists discovered.

Study
Vidar Andersen, of the Western Norway University of Applied Sciences, in the Journal of Sports Science and Medicine, compared the effects of the hyperextension [using the term Roman chair extension] with those of the Romanian deadlift and the machine back extension.

Andersen had the exercises performed by 15 female students, who had been training with weights for quite some time, with a load with which 6 reps were possible. He stuck electrodes on the subjects' bodies so that he could see how hard muscles such as the erector spinae, the biceps femoris or the gluteus maximus had to work during the upper and lower part of the movement.

Results
The figure below shows the activation of the muscle groups. Of these three exercises, the hyperextension appears to provide the best stimuli for the muscle groups. The Romanian deadlift comes in second.

Practical application
"For athletes and recreationally active people aiming to optimize the neuromuscular activation of the glutes and hamstring, we would particularly recommend the Roman chair exercise", writes Andersen.

"This exercise was in general more effective in activating these muscles, likely due to the biomechanical properties of the exercise creating a consistently large torque throughout the whole range of motion, and particularly in the upper part. It is also easier to perform with proper technique than the Romanian deadlift."

"Machine back extension was clearly inferior to the other two exercises."

Honor the deadlift
That's not to say Andersen thinks serious athletes should forget about the Romanian deadlift. The exercise certainly has its qualities.

"The Romanian deadlift maximizes its torque in a flexed hip position", Andersen continues. "As the hip is extended, the torque continuously decreases, allowing for increased velocity. These biomechanics would simulate running, and especially the top speed phase, where the hip torque is greatest in the late swing phase where the hip is flexed."

"Therefore, we recommend athletes and recreational trained to consider the purpose of the exercises before choosing which one to include in their weekly resistance-training program."

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Source: Journal of Sports Science and Medicine (2021) 20, 181-7.

More sleep can double your testosterone

More sleep can double your testosterone level

Older men can sometimes double their testosterone levels by getting more sleep, according to a human study that Plamen Penev of the University of Chicago published in Sleep.

Not enough sleep
Nearly all of us probably get too little sleep, mainly because we are seduced every day by the technology around us. It enables us to generate light at night, provides us with 24-hour entertainment and information through electronic media, and makes it possible for us to have contact with each other whenever we want. Every evening, when our body tells us that it's time to sleep, we can also do a thousand other things instead.

Sleep & hormones
Too little sleep messes up our hormone balance. It makes our body less sensitive to insulin for example. Dutch researchers recently showed that after just one night of four hours' sleep, young men's insulin sensitivity went down by twenty percent [J Clin Endocrinol Metab. 2010 Jun;95(6):2963-8.] and that of diabetics by a quarter. [Diabetes Care. 2010 Jul;33(7):1573-7.]

In the latter case, lack of sleep is clinically relevant, so doctors could advise diabetics who react insufficiently to their medicines to get more sleep. "Sleep duration might become another therapeutic target to improve glucoregulation in type 1 diabetes", the Dutch researchers say.

Sleep & testosterone
Testosterone is also affected by amount of sleep. That's not so strange, as our bodies make much more testosterone when they're asleep than when they're awake. [J Clin Endocrinol Metab. 2005 Aug;90(8):4530-5.] The figure below is from the study mentioned here. It shows how much testosterone is present in the blood of 22-32 year-old men while asleep and during the rest of the day.

The better men sleep, the higher their testosterone level rises while they are asleep. [J Clin Endocrinol Metab. 2001 Mar;86(3):1134-9.]

In the average male over forty, the testosterone level goes down by 1-2 percent per year, but researchers occasionally come across men in their eighties with a testosterone level you'd expect in a young man. Add to that the fact that many older men – but not all men – sleep less and less deeply as they get older, then you automatically think of the idea that Plamen Penev wanted to test in his study: does the testosterone level decrease in older men because they sleep less?

Penev based his theory on, among other things, research done by Eve Van Cauter, a sleep researcher at the University of Chicago who has celebrity status in the field of endocrinology. Van Cauter discovered early in the 21st century that men in their forties make less testosterone while sleeping than men in their twenties.[J Clin Endocrinol Metab. 2003 Jul;88(7):3160-6.]

Study
Penev measured the amount of testosterone 12 slim, healthy, non-smoking men aged between 64 and 74 had in their blood in the morning. He also got the men to wear a small gadget around their wrist, which enabled him to see how many hours per night the men slept. That varied from 4.5 to 7.5 per 24 hours. The longer the men slept, the figures below show, the more testosterone there was circulating in their blood.

The men that slept the least had a testosterone level of 200-300 ng/dl. That's a normal amount for men of this age, but it's on the low side. The men in the study who slept the most had a testosterone level that was twice as high: 500-700 ng/dl. That's a level you'd expect in healthy young men.

Conclusion
"These findings suggest that complaints of poor or insufficient sleep in otherwise healthy older men can be associated with a more pronounced age-related androgen decline", writes Penev. "Eliciting such sleep complaints in the physician's office may facilitate the judicious interpretation of lower testosterone levels in the older male patient."

Before men consider doing testosterone therapy, they might first measure the amount of sleep they get. And 'measuring' is different from 'guessing' or 'estimating'. Most people overestimate the number of hours that they sleep. This was also the case in Penev's study. The men thought that they slept seven and a quarter hours per day on average, but Penev's recordings showed that they only slept six hours a day.

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Reference: Sleep. 2007 Apr;30(4):427-32.

Strength Training works better than Cardio for fat loss

Strength training fights belly fat better than aerobic training

Men who do strength training keep their fat percentage lower in the long term than men who run, cycle or do other aerobic exercise. Epidemiologists at the University of Harvard came to this conclusion after following 10,500 men for 12 years.

Strength training and body fat
At first glance you'd think that aerobic forms of exercise such as running, cycling and rowing would offer better protection against building up excess fat than strength sports do. A weights workout burns a couple of hundred kilocalories at most, while an hour of intensive aerobic training will easily help you burn eight hundred kilocalories.

On the other hand though: after the age of thirty you lose a little bit of muscle mass each year. Because every kilogram of muscle mass you lose also lowers your daily calorie burning by a couple of dozen kilocalories, the older you are, the more easily you put on weight. You can stop this process by doing strength training. If you train really hard and eat enough protein, you can even build up more muscle mass as you age. Aerobic forms of exercise contribute little to building up more muscle mass.

Study
The researchers used data on over 10,000 healthy men that had been gathered between 1996 and 2008 in the Health Professionals Follow-Up Study, including information on how the waist measurement of the participants had changed over the study period. When the study began in 1986, the participants were aged between 40-75.

"Because aging is associated with the loss of skeletal muscle mass, relying on body weight is insufficient for the study of healthy aging", explained Rania Mekary, the first author of the study, in a press release. [harvard.edu December 22, 2014] "Measuring waist circumference is a better indicator of healthy body composition among older adults."

The researchers divided the men up according to the amount of exercise they got. First the researchers looked at the amount of moderate to vigorous aerobic activity [MVAA] the men got daily. The norm is at least half an hour a day of this type of exercise.

Then the researchers looked at the number of minutes a day the men devoted to strength training.

Results
Strength training offered more protection against a growing waist circumference than moderate to vigorous aerobic activity did, according to the figure below.

During the period that the researchers monitored the men, their waist measurement increased by an average of 6.6 cm. Strength training reduces this increase by 3 cm. According to this study, that happens regardless of whether you adhere to the norm for moderate to vigorous aerobic activity or not.

The researchers even calculated that if the participants had done 20 minutes of strength training daily during the 12 years of the study instead of 30 minutes of aerobic activity, they would have lost another 0.34 cm from their waist measurement. It would have been even better if they had done 20 minutes strength training a day instead of of watching TV for 30 minutes: that would have resulted in a reduction of 0.76 cm on the waist measurement.

Conclusion
The leader of the project, Frank Hu, emphasised in a press release [harvard.edu December 22, 2014] that the study does not show that aerobic forms of exercise are therefore no longer necessary. Aerobic exercise has positive effects on the cardiovascular system that strength training does not have.

"This study underscores the importance of weight training in reducing abdominal obesity, especially among the elderly", said Hu. "To maintain a healthy weight and waistline, it is critical to incorporate weight training with aerobic exercise."

Positive emotions extend life expectancy by ten years

Positive emotions extend life expectancy by ten years

The more positive your attitude to life is - the more optimistic, upbeat, content and happy you are - the longer you are likely to live. According to researchers on the aging process at the University of Kentucky, a positive attitude to life can add more than a decade to your life expectancy. The researchers base this bold assertion on research done on 180 nuns.

Positive emotions & life span
That there's a relationship between emotions and life expectancy is not so strange. Negative emotions, such as sadness, fear, disgust and worry raise the heart beat and blood pressure and increase the likelihood of cardiovascular disease.

Conversely, positive feelings such as optimism inhibit the negative impact of stress on the cardiovascular system. If your future outlook is positive, negative events will cause less stress.

But life expectancy is determined by many more factors, such as marital status, social activities, smoking and alcohol, access to medical facilities and physical activity. Thats why the researchers decided to study nuns; they all live largely the same kind of lifestyle. That makes it easier to focus on the presence of positive emotions.

Study
Between 1991 and 1993 the researchers approached all the nuns of the School Sisters of Notre Dame who were still alive and had been born before 1917. That meant they were all between 75 and 102 years old.

In 1930, when the sisters were between 18 and 32, they had been asked to write a short autobiography by their Mother Superior. The researchers decided to analyse the autobiographies of 180 nuns who had lived in convents in Milwaukee and Baltimore.

Results
The researchers looked on the one hand at sentences with "low positive emotion", sentences with "high positive emotion", the number of words that reflected positive emotions and the number of kinds of positive emotions, and at life expectancy on the other hand. When they divided the nuns up into quartiles they noticed that it was above all the number of positive emotions that influenced life expectancy.

Nuns that had written about the most different types of positive emotions had a four times lower risk of mortality than the nuns who expressed the fewest positive emotions. The difference in life expectancy between these two groups was 10.7 years.

The figure below shows the survival curves of the four groups of nuns. Quartile 1 is the group of nuns with the lowest number of sentences describing a positive emotion; Quartile 4 is the group of nuns with the highest number of positive sentences. The life expectancy of the nuns in Quartile 4 exceeded that of the nuns in Quartile 1 by 6.9 years.

The researchers calculated that for every one percent increase in the number of positive sentences the nuns' mortality risk decreased by 1.4 percent.

The researchers were surprised at the strength of the effect they found. They suspect that scientists have not noticed this before because a positive attitude to life is often associated with unhealthy behaviour. It's only likely to emerge if you study groups of people who are unable to live unhealthy lifestyles - like nuns.

Conclusion
"One behavioral pathway is suggested by the study by H. S. Friedman [Personality and Longevity: Paradoxes. In: Research and Perspectives in Longevity 1999, pp 115-122.] in which cheerful participants were more likely to engage in behaviors that are health risks such as excessive drinking and smoking. Such a pathway would be expected to disrupt the potential physiological benefits of a pervading pattern of positive emotional responsiveness", they write.

"In contrast, all participants in the current study had lived a lifestyle in which such health-risk behaviors were improbable and therefore the physiological impact of a positive emotional style was almost certainly enhanced."

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Reference: J Pers Soc Psychol. 2001 May;80(5):804-13.

Intense Workouts 2xWeek Reduce Burnout from Office Work

Resistance training and cardio training offer protection against burnout

Employees, freelance workers and entrepreneurs are less likely to succumb to a burnout if they do an intensive training session twice a week. Psychologists at the University of New England in Australia discovered that both strength training and cardio training reduce the chances of having a burnout.

Burnout
The term burnout was coined in 1975 by the American psychologist Christina Maslach. According to Maslach a burnout has three components.

The most obvious of these is emotional exhaustion, followed by depersonalisation. Depersonalisation is when someone develops a negative and often cynical attitude towards their colleagues, the organisation where they work and the work itself. The third component in a burnout is that someone's sense of personal accomplishment decreases.

Study
The Australian researchers wanted to find out whether doing sports would reduce the likelihood of developing a burnout, so they got 29 subjects, aged between 19 and 68, to train three times a week for a period of four weeks. Each session lasted at least half an hour. Twenty subjects did cardio training and 9 did weight training. A control group of 20 people did no sports at all.

Results
At the beginning and end of the four weeks the researchers got the subjects to fill in a questionnaire designed in the 1980s by Maslach to measure burnout. The figures below show that cardio training reduced emotional exhaustion and that resistance training boosted the subjects' personal accomplishment.

In addition, resistance training and cardio training both increased the feeling of psychological wellbeing and reduced the amount of stress that the subjects reported.

Conclusion
"This research provides a valuable supplement that attests to the significant benefit of exercise to both individuals and organisations in increasing well-being, reducing perceived stress, and reducing burnout", the researchers wrote.

"The positive effect of resistance training on personal accomplishment and the psychological distress reducing effects of cardiovascular exercise are exciting extensions of the current literature which, if replicated, can support health and fitness professionals in developing exercise programs for optimal physical and psychological health."

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Reference: PeerJ. 2015 Apr 9;3:e891.

Hack your Endurance with Rhodiola & Ginkgo

Rhodiola and ginkgo combination boosts endurance (no training required)

Supplementation with extracts of Ginkgo biloba and Rhodiola crenulata increases the stamina of young men. This is shown in a human study published in 2009 in the Chinese Journal of Integrative Medicine.

Study
The researchers, at the University of Hong Kong, divided 67 young men into 2 groups. For 7 weeks, they gave the men in one group placebo capsules and the men in the other group capsules containing extracts of Ginkgo biloba and Rhodiola crenulata in a ratio of 1: 9.

The men took 4 capsules each day, each containing 270 milligrams of extract mixture. They took 2 capsules with breakfast and 2 capsules with dinner.

Results
The supplement increased the men's stamina. The subjects in the experimental group managed to cycle longer, and that may have been due to the increase in their bodies' ability to absorb oxygen. [VO2max]

Supplementation did not affect the test subjects' testosterone levels, but it did prevent cortisol levels from rising after exercise. That may mean that the men recovered faster.

Conclusion
"The present findings have provided evidence supporting the use of Rhodiola crenulata and Ginkgo biloba combined supplement for improving the endurance performance by increasing oxygen consumption and protecting against fatigue", summarize the researchers.

According to Russian animal study, extracts from both plants improve endurance, albeit in different ways. [Bull Exp Biol Med. 2003 Dec;136(6):585-7.]

Women and Men respond similarly to strength trianing

Women's upper body muscles respond to strength training just as well as men's

The extent to which women can strengthen the muscles in their upper body through strength training is the same as the extent to which men can do this. However, this does not imply that women can easily reach the strength level of men who work out.

Study
In 2016, Brazilian sports scientist Paulo Gentil published a study in which he got 44 male and 47 female students to do a full-body workout twice a week for 10 weeks.

The workout consisted of basic exercises such as leg press, leg curl, chest press and lat pulldown. The subjects did 3 sets of each exercise with a weight that allowed for 8-12 repetitions. The subjects rested for 2 minutes between sets.

Before and after the training period, the researchers determined the torque that the test subjects could develop during a biceps curl. 'Torque' is what athletes in the gym often refer to as 'force'.

Results
In absolute terms, the men gained more strength than the women [left in the figure below]. But in relative terms, in terms of progression over the strength already present before the training program began, the progression of the men was similar to that of the women [bottom right].

Conclusion
"Despite the physiological and hormonal differences between sexes, women demonstrated the same relative strength gains compared to men [...]", writes Gentil.

"It appears there is presently no evidence of a need to design different resistance training protocols to men and women. [...] One should not expect to find limitations in upper body strength development in women."

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Reference: PeerJ. 2016 Feb 11;4:e1627.