BMI Calories - Free Health and Fitness Calculators
Description: Sleep Calculator - Find your ideal sleep time for peak energy and performance, coupled with effective tips for waking up refreshed and enjoying better sleep!
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Welcome to sleep-calculator.com - a bedtime sleep calculator that counts sleep cycles in order to figure out when to go to sleep and when to wake up so that you'll feel energetic and refreshed.
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During the night, sleeping follows a predictable pattern, moving back and forth between deep sleep and REM sleep. Together, REM and non-REM sleep stages form a complete sleep cycle. Each cycle typically lasts about 90 minutes and repeats four to six times over the course of a night.
BMI Calories - Free Health and Fitness Calculators