Good day starts with good morning! Go to bed at the right time and wake up in between your natural 90-minute sleep cycles to feel rested and refreshed. A good night's sleep consists of 5-6 complete sleep cycles. ◦ Select when you want to wake up ◦ Calculate your best time to go to sleep ◦ Calculate the best time to wake up It takes an average human about 15 minutes to fall asleep. If you wake up at one of the calculated times, you'll rise in between 90-minute sleep cycles. Sleep Calculator