WakeUpTimes App
A sleep cycle lasts about 90 minutes, and a good night's sleep consists of 5-6 sleep cycles.
If you wake up in the middle of a sleep cycle, you will feel groggy, even if you've completed several cycles prior to waking up.
If you go to bed now, when should you wake up?
If you go to bed right now*, try to wake up at one of these times:
12:15 AM
1:45 AM
3:15 AM
4:45 AM
6:15 AM
7:45 AM
*It takes the average human fourteen minutes to fall asleep.