Fitness
Recovery Is Training: Why Rest Days Are Doing More Than You Think
Rest days are often treated as the absence of training. They're actually where most of the adaptation happens.
By Marcus Chen ·
4 min read
Fitness
Rest days are often treated as the absence of training. They're actually where most of the adaptation happens.
Sleep
Glycine is one of the few supplements with a plausible mechanism and reasonable evidence for sleep. Here's why it works — and whether it might help you.
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Mental Health
Journaling for stress relief isn't just free-writing. Structure matters. Here's the evidence-based approach.
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Nutrition
Mindful eating has genuine evidence behind it, but the practice often gets reduced to eating slowly and putting down your fork. The real application is more interesting.
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Supplements
Fish oil is one of the most popular supplements in the world and one of the most misunderstood. Here's what the evidence actually shows.
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Cardiovascular
HRV tracking apps are everywhere. But interpreting your own HRV data requires understanding what variability means physiologically — and when it matters.
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Sleep
Lucid dreaming is achievable, but methods can disrupt sleep quality. Here's what actually works and what the trade-offs are.
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Nutrition
Adding fermented foods doesn't instantly fix your gut, but it does shift your microbiome measurably. Here's what science shows.
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Lifestyle
Morning routine culture has generated an entire genre of content. Here's what the research actually supports, stripped of the productivity mythology.
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Nutrition
Protein recommendations range from barely enough to survive to amounts that would require eating every two hours. Here's what the evidence actually supports.
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Sleep
CBT-I is the most evidence-based treatment for insomnia. Here's how it works and why it's different from other approaches.
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Metabolic
A 2–3 minute walk after meals is one of the simplest interventions for improving glucose control and reducing diabetes risk.
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Nutrition
Inflammation is real, chronic inflammation is a genuine health concern, and diet does influence it. Here's what the evidence says about which foods matter and why.
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Fitness
Most people either go hard or don't go at all. Zone 2 training — the forgotten middle — drives aerobic adaptation more efficiently than high-intensity work alone.
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Nutrition
Farmed salmon is cheaper but different. Here's how to choose based on what you actually value.
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Sleep
Most sleep hygiene advice lists the same things: dark room, cool temperature, no screens. All true. Here's the layer underneath that most people miss.
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Sleep
There's a window 3–4 hours before your normal sleep time when falling asleep becomes nearly impossible. Here's why.
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Metabolic
Insulin sensitivity determines how well your body regulates glucose. Exercise, sleep, and muscle mass are the primary levers.
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Nutrition
Intermittent fasting isn't magic. Here's what 10 years of research tells us about eating windows and metabolic health.
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Supplements
Vitamin D deficiency is genuinely common, and supplementation is among the most evidence-supported interventions in nutrition. Here's how to think about it.
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Nutrition
Dark chocolate is healthy—if you understand what you're actually eating and why it matters.
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Nutrition
Zero-calorie sweeteners aren't all equal. Here's what the evidence says about each one.
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Fitness
In the race to optimize exercise, walking gets dismissed as too easy to count. The research tells a different story.
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Fitness
Isometric training builds strength at the angle trained. It's particularly useful for overcoming sticking points and joint-specific needs.
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Fitness
Balance declines predictably with age. Targeted training slows the decline and meaningfully reduces fall risk. Here's what the research shows.
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Sleep
Shift work messes with your circadian rhythm, and adaptation is harder than most people think.
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Nutrition
Creatine is the most studied supplement. Here's what it actually does and why it's useful even if you don't lift.
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Hydration
You hear about electrolytes constantly. What they actually do — and the sodium-to-potassium balance that matters — is more nuanced than sports drink marketing.
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Nutrition
Dietary fiber is one of the most consistently beneficial dietary components in nutritional research, yet most people get less than half the recommended amount. Here's what it actually does.
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Fitness
Plyometric training builds power and explosiveness. It's useful for general fitness, fall prevention, and maintaining athleticism with age.
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Mental Health
Panic attacks feel life-threatening but are physically safe. Understanding the mechanism lets you interrupt the cycle.
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