Time your sleep to wake between cycles and feel more rested.
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For general information only. These results are estimates, not a diagnosis or medical advice. Always talk to a doctor or qualified health professional about your health. In an emergency, call your local emergency number.
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How to use
Choose a wake-up time, or "sleep now".
See the best bedtimes or alarm times.
Pick one that gives 7–9 hours.
Frequently asked questions
Why 90 minutes?
A full sleep cycle lasts about 90 minutes on average. Waking at the end of a cycle usually feels easier than waking from deep sleep.
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