Sleep Cycle Optimizer

Plan your sleep around 90-minute REM cycles.

📜 The Origins

The human brain sleeps in cycles of approximately 90 minutes. Waking up at the end of a cycle makes you feel refreshed, while waking mid-cycle leads to that 'morning zombie' grogginess.

🚀 Master the Tool

Input the time you need to wake up (or the time you're heading to bed). We'll calculate the perfect windows for you to drift off and wake up perfectly in sync with your biology.

Sleep Cycle Optimizer
Master your REM cycles. Waking up in the middle of a sleep cycle leaves you groggy. Aim for 5-6 cycles (7.5 - 9 hours).
:

You should try to fall asleep at one of these times:

Recommended
9:46 PM
6 Cycles (9 Hours)
Recommended
11:16 PM
5 Cycles (7.5 Hours)
12:46 AM
4 Cycles (6 Hours)
2:16 AM
3 Cycles (4.5 Hours)

Pro Tips

01The average human takes 14 minutes to fall asleep.
02Try to get 5 or 6 full cycles for a perfect night's rest.
03Even a 20-minute power nap can reset your focus.

The Fine Print (FAQ)

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