Sleep Calculator
Calculate optimal bedtime based on 90-minute sleep cycles. Waking between cycles (not during) helps you feel refreshed. 5 cycles = 7.5 hours + 15 min to fall asleep = 7 hours 45 minutes total. Set your alarm accordingly.
Calculate optimal bedtime based on 90-minute sleep cycles. Waking between cycles (not during) helps you feel refreshed. 5 cycles = 7.5 hours + 15 min to fall asleep = 7 hours 45 minutes total. Set your alarm accordingly.