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Plan an Early Morning Wake-Up

Catching an early flight or meeting? Find the bedtime that minimizes grogginess.

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Go to bed at
9:45 PM
9 hrs
6 cycles Β· ideal
Go to bed at
11:15 PM
7.5 hrs
5 cycles Β· ideal
Go to bed at
12:45 AM
6 hrs
4 cycles
Go to bed at
2:15 AM
4.5 hrs
3 cycles

πŸ’‘ Sleep happens in ~90-minute cycles. Waking at the end of a cycle (rather than mid-cycle) helps you feel refreshed instead of groggy. Most adults do best with 5–6 cycles (7.5–9 hours), plus ~15 minutes to drift off.

Early Wake tips

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For a 5am wake-up, the calculator shows which bedtimes give whole cycles instead of a jarring mid-cycle alarm.

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If you can't get 6 cycles, a clean 4-5 cycles often beats a longer sleep that ends mid-cycle.

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Avoid caffeine 6+ hours before your planned bedtime so you actually fall asleep on schedule.

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