What time should I go to bed if I wake up at 8:00 AM?
Go to bed at 10:45 PM for 6 sleep cycles (9 h of sleep) or 12:15 AM for 5 cycles (7 h 30 min). Both include 15 minutes to fall asleep, so you wake up at 8:00 AM between cycles instead of in deep sleep.
I want to wake up at
Get into bed at one of these times
To wake up at 8:00 AM. Includes 15 min to fall asleep.
- 10:45 PMBest
6 cycles · 9 h of sleep · Ideal for most adults.
- 12:15 AMGreat
5 cycles · 7 h 30 min of sleep · Enough rest for most adults.
- 1:45 AMOkay
4 cycles · 6 h of sleep · The minimum for a normal night.
- 3:15 AMShort
3 cycles · 4 h 30 min of sleep · Better than nothing. Plan to catch up.
- 4:45 AMVery short
2 cycles · 3 h of sleep · Only for a quick reset.
- 6:15 AMPower nap
1 cycle · 1 h 30 min of sleep · Emergency only.