Sleep
Sleep Hygiene: The Highest-ROI Biohack
No supplement beats fixing your sleep. Here are the evidence-based habits that actually improve it, and...
Magnesium for Sleep and Stress: Useful, Oversold, or Both?
Magnesium is one of the most popular sleep supplements. The evidence is modest and mixed. Here is what it...
Sleep Trackers: What the Data Can and Can't Tell You
Your wearable confidently reports last night's deep sleep down to the minute, but the gap between that...
Why a Cool Bedroom Builds Deeper Sleep
Falling asleep depends on your body shedding heat, and a cool room is one of the few sleep interventions...
Blue Light, Screens, and Your Circadian Clock
Blue light suppresses melatonin and shifts your body clock, but the screen-time panic oversimplifies a...
Melatonin: You're Probably Dosing It Wrong
Most people take far more melatonin than they need and at the wrong time — it's a timing signal, not a...
Glycine: The Underrated Sleep Amino Acid
Glycine is a cheap, simple amino acid with a small but genuinely interesting body of research suggesting...