A recent study reveals that our bodies use the REM period of sleep - the dreamless and deep part - to cleanse our brain of toxins.
When the neurons in the brain quiet down, they need less oxygen and blood. At that point, cerebrospinal fluid - the liquid surrounding the brain - floods the space, cleaning the brain of potentially toxic chemical byproducts.
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REM, the Rapid Eye Movement stage of sleep happens when our eyes are moving fast; we are said to be dreaming in that stage.
NREM (Non-Rapid Eye Movement) is the stage of sleep when we are in deep sleep and are not moving. In this stage, our brain is able to clear toxins and con...
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