Around 2:00 in the afternoon, Jay gets tired and takes a nap. Which concept explains why Jay's energy level varies with the time of day?
A) circadian cycle
B) sleep-wake cycle
C) seasonality cycle
D) lunar cycle

Question

Quizplus · Accepted Answer

The circadian cycle is the 24-hour internal clock that regulates various physiological processes, including sleep and wakefulness. It explains why Jay's energy level varies with the time of day, specifically why he gets tired and takes a nap in the mid-afternoon. The sleep-wake cycle is related to the circadian cycle but refers specifically to the pattern of sleep and wakefulness throughout a 24-hour period. Seasonality and lunar cycles are not relevant to Jay's energy level fluctuations.

Around 2:00 in the Afternoon, Jay Gets Tired and Takes