Everyday Jay gets tired at around two in the afternoon and takes a nap.Which of the following best explains Jay's energy level that fluctuates depending on the time of day?
A) Circadian cycle
B) Homeostatic cycle
C) Biometric cycle
D) Lunar cycle
E) Tachycardia cycle

Question

Quizplus · Accepted Answer

The circadian cycle is responsible for regulating the body's sleep-wake cycle and is influenced by external cues such as sunlight. It is not uncommon for individuals to experience a drop in energy levels during the mid-afternoon and feel the need for a nap.

Everyday Jay Gets Tired at Around Two in the Afternoon