The 5 Stages of Sleep and Their Affect on Your Body

When we fall asleep, we pass through 5 stages of sleep, moving in and out of each until we awaken the next morning. There are 5 main stages of sleep. Stages 1-4 are referred to as non-REM (rapid eye movement) stages and the 5th stage is REM sleep. During a normal 8-hour sleep cycle, we go through these stages multiple times, falling in and out of REM sleep. At each stage of our sleep, something different occurs in the brain and body.

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