A member asked:

How many hours of stages 3 and 4 non rem deep sleep do i need a day? i am dreaming a lot and feeling exhausted and weak.

A doctor has provided 1 answer

Intelligent question: but it doesn't work like that. Stages of sleep develop, and then start all over a few times every night, and are not usually summed to a whole. But you may need a sleep study. In any case, check with a professional about not restful sleep.

Answered 11/1/2015

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