Category: Everyday Science | Last updated: 2026-09-18
Which stage of sleep is characterized by vivid dreaming, increased brain activity, and temporary muscle paralysis (atonia)?
A) NREM Stage 1
B) NREM Stage 2
C) NREM Stage 3 (Deep Sleep)
D) REM Sleep
Explanation
REM (Rapid Eye Movement) sleep is distinct for its high brain activity resembling wakefulness, vivid dreaming, and the body's temporary muscle paralysis to prevent acting out dreams.