Circadian & Chronotype Tools
Calculators for chronotype, melatonin timing, schedule shifting, alcohol's effect on sleep, teen school sleep, and pre-restriction banking. All grounded in circadian science.
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Melatonin for Sleep: What the Research Actually Says
Understand how melatonin works, optimal dosing (0.5mg vs 10mg), timing, and when it actually helps versus when it doesn't.
What Is a Chronotype? Lion, Bear, Wolf & Dolphin Explained
Understand your natural sleep-wake rhythm, the genetic basis of chronotype, social jet lag, and how your type affects health and performance.
Delayed Sleep Phase Syndrome: When Night Owl Becomes Clinical
DSPS diagnosis, prevalence, treatment options including light therapy, melatonin timing, and chronotherapy for persistent late sleep timing.
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Educational information, not medical advice. Consult a healthcare provider for sleep disorders or before taking any supplement.