Find the optimal time to sleep or wake up based on 90-minute sleep cycles for refreshed mornings.
💡 Include ~15 min to fall asleep
A complete sleep cycle lasts approximately 90 minutes and includes all stages of sleep: light sleep, deep sleep, and REM sleep. Waking up at the end of a complete cycle helps you feel more refreshed than waking up in the middle of one.
The average person needs 4-6 complete cycles per night, which translates to 6-9 hours of sleep. The key is to align your sleep and wake times with these natural cycles.