NREM-3 Sleep
Definition
Also known as deep sleep or slow-wave sleep, this is the third stage in the cycle of non-rapid eye movement (NREM) sleep, during which the body repairs and regrows tissues, builds bone and muscle, and strengthens the immune system.
Analogy
Think of NREM-3 sleep as your body's maintenance crew working the night shift. While you're off duty (sleeping), they come in to repair any damage from the day, restock supplies, and get everything ready for another day of work.
Related terms
Rapid Eye Movement (REM) Sleep: This is a stage of sleep characterized by rapid eye movements, more dreaming and bodily movement, and faster pulse and breathing.
Sleep Cycle: The pattern of shifting through stages of NREM sleep to REM sleep before beginning again with NREM.
Delta Waves: These are high amplitude brain waves that are associated with deep sleep (NREM-3).
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