Bill suddenly and without warning slips into REM sleep during the day. He often falls to the ground and is difficult to awaken. Bill may have a condition called

A) sleep apnea.
B) insomnia.
C) narcolepsy.
D) epilepsy.

REM Sleep

stands for Rapid Eye Movement Sleep, a sleep phase characterized by rapid movement of the eyes, increased brain activity, vivid dreams, and temporary paralysis of major muscle groups.

Sleep Apnea

A sleep disorder characterized by pauses in breathing or periods of shallow breathing during sleep, often leading to disrupted sleep and decreased oxygen levels.

Narcolepsy

A long-term sleeping condition identified by excessive sleepiness during the day and unexpected sleep episodes.