Gentle targets from 90-minute cycles—not a medical device
Default 90 min cycles + optional minutes to fall asleep
90 is the common rule-of-thumb; you can adjust 60–120.
Sleep “cycles” here mean repeating blocks of the length you set (often ~90 minutes). Real sleep architecture varies by person, age, and health.
This page is not medical advice and does not diagnose sleep disorders.
It suggests wake times from a bedtime (or bed times from an alarm) using a configurable cycle length—often about 90 minutes between rough sleep phases.
No. Sleep disorders, medications, shift work, and individual variation are not diagnosed here.
It is a common rule-of-thumb for sleep-cycle length in popular science; your real architecture varies.
Not guaranteed. Sleep pressure, caffeine, noise, and stress change how restorative a window feels.
Times you type are not uploaded by this static flow.
Educational visualization only.