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Sleep Cycle Calculator

Calculate optimal wake-up times or bedtimes based on 90-minute sleep cycles. Wake up refreshed and energized with scientifically optimized sleep scheduling.

Health & Wellness Math & Calculation 10,000

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A full sleep cycle lasts about 90 minutes, including light sleep, deep sleep, and REM sleep.

Waking up at the end of a cycle (rather than in the middle of deep sleep) leaves you feeling more refreshed.

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