Sleep

Sleep debt, sleep quality, circadian rhythm, and recovery. Tools first, same as every other pillar here.

Sleep Debt Calculator

How many hours behind you are this week, based on your target and actual sleep.

Sleep Quality Score

A quick self-assessment of last night’s sleep — latency, wakings, duration, and how you felt on waking.

Melatonin and glycine — the most commonly used sleep supplements — have evidence-rated profiles in the Supplement Database. Neither tool on this page screens for sleep disorders like apnea — if you snore heavily, wake gasping, or are excessively tired despite adequate hours in bed, that’s worth bringing to a clinician regardless of what these self-assessments say.