Sleep Calculator
Sleep runs in cycles of roughly 90 minutes, and waking between cycles feels far better than being pulled out of the middle of one. Pick a time and see where your cycles land.
Aim to fall asleep at one of these times:
Recommended21:456 cycles · 9 hours of sleep
Recommended23:155 cycles · 7,5 hours of sleep
00:454 cycles · 6 hours of sleep
02:153 cycles · 4,5 hours of sleep
Times allow for the average 15 minutes it takes to fall asleep.
A guide, not a prescription: cycle length varies from person to person. If you wake feeling rested, your timing is already right.
Waking between cycles also means waking closer to your dreams. Keep your journal within reach.