๐ด Based on 90-min sleep cycles
Sleep Cycle Calculator
If you sleep now, we'll show the wake times that leave you least groggy. One input, one answer.
When do you plan to sleep?
Assumes it takes ~15 min to fall asleep. When time is short, aim for 4 cycles; if you've got time, 5โ6 cycles is best.
Your recent time is saved automatically.