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Dreaming and REM Sleep
REM sleep is the fourth stage of sleep. You go through four or five REM cycles each night. Each cycle lasts about 90-120 minutes. During REM sleep, skeletal muscles are temporarily paralyzed to allow you to dream. This is called muscle atonia. Isolated RBD is associated with issues in the part of the brainstem called the pons, which controls muscle atonia. It’s...
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