Bedtime
When do you plan to go to sleep?
It takes ~15 minutes to fall asleep. You should be sleeping by 02:40 AM.
Wake-up times
Waking at the end of a complete cycle helps you feel refreshed.
04:10 AMLight sleep
1 cycle · 1h 30m of sleep
05:40 AMLight sleep
2 cycles · 3h of sleep
07:10 AMLight sleep
3 cycles · 4h 30m of sleep
08:40 AMRecommended
4 cycles · 6h of sleep
10:10 AMRecommended
5 cycles · 7h 30m of sleep
11:40 AMFull rest
6 cycles · 9h of sleep
A sleep cycle lasts ~90 minutes. Most adults need 4–6 cycles (6–9 hours) per night.