With the approach of night, our body temperatures begin to drop. This best illustrates the dynamics of the

Question

Quizplus · Accepted Answer

Circadian rhythm refers to the 24-hour biological cycle that regulates various physiological processes including body temperature, sleep-wake cycle, and hormonal secretion. As night approaches, the circadian rhythm signals our body to decrease its temperature, which helps us prepare for sleep. Option A refers to the transitional state between wakefulness and sleep, option C refers to a characteristic brainwave pattern during relaxed wakefulness, and option D refers to the increased amount of REM sleep after a period of sleep deprivation.

With the Approach of Night, Our Body Temperatures Begin to Drop