After four years of working nights,Raymond now works days.His present difficulty in getting to sleep at night is most likely due to a disruption of his normal
A) circadian rhythm.
B) hypnagogic sensations.
C) alpha wave pattern.
D) sleep apnea.

Question

Quizplus · Accepted Answer

Raymond's difficulty in getting to sleep at night is most likely due to a disruption of his circadian rhythm, which is the body's internal biological clock that regulates the sleep-wake cycle. Working nights for four years would have set his circadian rhythm to be awake at night and asleep during the day, and now that he has switched to working days, his body is still trying to adjust to this new sleep-wake schedule.

After Four Years of Working Nights,Raymond Now Works Days