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Sleep Cycle Calculator
Sleep Cycle Calculator
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Go to sleep at
Each sleep cycle is ~90 minutes. Waking at cycle end prevents grogginess.
Average time to fall asleep: 14 minutes
Wake Up Feeling Refreshed
Sleep cycles last about 90 minutes each. Waking up at the end of a cycle, during light sleep, helps you feel more alert and refreshed compared to waking mid-cycle during deep sleep.
The calculator accounts for the average 14 minutes it takes to fall asleep, giving you accurate times for optimal rest.