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0Free sleep calculator: find the best time to go to bed or wake up based on 90-minute sleep cycles, so you wake up rested.
Includes about 15 minutes to fall asleep. 5-6 cycles (7.5-9 h) are best for adults.
Free sleep calculator: find the best time to go to bed or wake up based on 90-minute sleep cycles, so you wake up rested.
Includes about 15 minutes to fall asleep. 5-6 cycles (7.5-9 h) are best for adults.