Explore our collection of articles and guides in this category.
How circadian disruption works, why eastward travel is harder than westward, melatonin timing and light therapy protocols, and the fastest evidence-based jet lag recovery strategies.
AAP sleep duration recommendations by age, why school start times conflict with adolescent biology, nap transitions, and a bedtime calculator for children.
2017 Nobel Prize chronobiology research, the SCN master clock, chronotype genetics, shift worker health risks, and how light resets your circadian rhythm.
The 90-minute sleep cycle, N1/N2/N3/REM stages explained, sleep inertia causes, and the optimal wake time formula based on bedtime.
NASA's 26-minute nap research showing 34% performance improvement, the coffee nap mechanism and protocol, and circadian nap timing (the 1–3pm window).
14 days at 6h/night equals legal intoxication per Dinges' Penn study, why you can't self-assess impairment, weekend recovery limitations, and adenosine biology.
Sleep efficiency ≥85% target, sleep onset latency normal range, why consumer wearables overestimate sleep by 10–20%, and evidence-based quality improvements.
STOP-BANG questionnaire for OSA risk (85% of apnea is undiagnosed), chronic insomnia DSM-5 criteria, RLS and iron deficiency, and CBT-I as first-line insomnia treatment.
