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Sleep cycle calculator!
Sleep cycle stages time
How Much Time Should You Spend in Each Stage of Sleep?
There are 4 stages of sleep that your body experiences each night (usually spanning 3-5 sleep cycles): Light sleep, deep sleep (also referred to as slow wave sleep or SWS), REM sleep and awake.
For a more in-depth explanation of how this works, check out Understanding Sleep Cycles and the Stages of Sleep. Below we’ll give a brief overview of the 4 sleep stages, then break down what’s normal for how much time you should be spending in all of them.
The 4 Stages of Sleep
1.
LIGHT SLEEP
Light sleep occurs as you transition to deep sleep. It has minimal restorative impact and you can be easily awakened during it.
Sleep calculatorYour body is more responsive to its environment in this stage.
2. DEEP SLEEP (SWS)
Deep sleep, known as the “physically restorative” stage of sleep, is when your muscles and tissues repair themselves and cells regenerate.
The body produces 95% of human growth hormone during this time. It is often difficult to wake up during deep sleep, and when you do you are likely to feel groggy and disoriented.