How many hours of core sleep do you need
- how many hours should be deep sleep
- how many hours should be your deep sleep
- how many hours should deep sleep last
- how many hours a night should be deep sleep
How to increase deep sleep!
What is core sleep
What Is Deep Sleep and Why Is It Important?
Sleep is divided into two categories: REM and non-REM sleep. You begin the night in non-REM sleep followed by a brief period of REM sleep. The cycle continues throughout the night about every .
Deep sleep occurs in the final stage of non-REM sleep.
Non-REM sleep
Stage 1 of non-REM sleep lasts as you move from being awake to being asleep.
During stage 1:
- your body functions — like heartbeat, respiration, and eye movements — begin to slow
- your muscles relax with only occasional twitches
- your brain waves start to slow down from their wakeful state
Stage 2 accounts for about of the total sleep cycle.
This is the stage of sleep you may fall into throughout the night.
During stage 2:
- your body’s systems continue to slow and relax
- your core temperature drops
- your eye movements stop
- your brain waves are slow, but you have some short bursts of activity
Stages 3 and 4 are when you experience deep sleep.
During these stages:
- your heartbeat and breathing become their slowest as your muscles relax
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- how many hours does deep sleep last
- how many hours should u be in deep sleep