REM (Rapid Eye Movement) sleep

REM sleep, or Rapid Eye Movement sleep, is a unique phase of the sleep cycle characterized by quick, darting eye movements, vivid dreaming, and heightened brain activity similar to wakefulness. During REM, the body experiences muscle paralysis to prevent acting out dreams, while the brain consolidates memories and processes emotions. Typically occurring about 90 minutes after falling asleep, REM sleep becomes longer with each cycle throughout the night. It plays a crucial role in mental well-being, learning, and emotional regulation, making it essential for restful, restorative sleep.