Q: Normally, how many times do people toss & turn during the night. Why do they do this?
Sleep is not departure from wakefullness - it is simply a state in which you are 'unaware of your external environment" - but physiologically it is an active metabolic process - hence your reason for moving. It varies person-to-person - and clearly movement is important since you can have muscle strain or even pressure sores a DVT (blood clot) without movement. But it is variable with no predictability or precise number.
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