Select your desired wake up time:
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How Does It Work?
A good night's sleep consists of 5-6 complete sleep cycles, with each cycle lasting about 90 minutes. Waking up in the middle of a cycle can leave you feeling tired and groggy. This calculator helps you find the perfect time to fall asleep or wake up, allowing you to rise between cycles and feel refreshed and energized. We also account for the average 14 minutes it takes to fall asleep.
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