you’re getting while asleep. That’s because there are different stages of sleep, each one with its own essential functions and benefits—and one of these important stages of sleep is called rapid eye movement, or REM sleep. To better understand this crucial phase of our nightly sleep cycle, we asked experts in sleep medicine to find out what happens during the REM stage, and how much REM sleep you need for optimal health. Your body is busy working hard building bones [and] muscles, repairing and re-growing tissues, and strengthening your immune system when you are sleeping REM sleep is associated with the processing of emotional experiences and maintaining mental health. Additionally, it contributes to overall cognitive functioning and alertness during waking hours.
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