I wake up in the middle of the night and notice that my roommate is fast asleep. I can tell because of the relaxed muscles, decreased rate of respiration, and slightly lower body temperature. My roommate is mostly likely experiencing

Question

Quizplus · Accepted Answer

The description of relaxed muscles, decreased respiration rate, and lower body temperature is indicative of delta sleep, also known as slow-wave sleep, which is a deep sleep stage characterized by these physiological changes.

I Wake Up in the Middle of the Night and Notice