REM sleep refers to __________

A) dreamless sleep.
B) sleep induced by sleeping pills.
C) sleep periods in which sleepwalking is likely.
D) sleep periods in which a person's eyes move rapidly.

REM Sleep

REM (Rapid Eye Movement) Sleep is a stage of sleep characterized by rapid movements of the eyes, low muscle tone, and the propensity to dream vividly.

Sleeping Pills

Medications taken to help induce sleep in individuals who struggle with falling asleep or staying asleep, known as insomnia.

Sleepwalking

A sleep disorder causing people to get up and walk around during deep sleep, often unaware of their activities upon awakening.