Health
Sleep Cycle Calculator
Find the optimal times to go to bed to wake up refreshed.
You should try to fall asleep at one of these times:
9:45 PM
6 Cycles (9 hours)
Optimal11:15 PM
5 Cycles (7.5 hours)
Optimal12:45 AM
4 Cycles (6 hours)
2:15 AM
3 Cycles (4.5 hours)
* Times shown factor in the average 15 minutes it takes to fall asleep.
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