Why do humans sleep at night instead of during the day?
A) There is most danger at night, when we cannot see well.
B) There is least danger at night, so we are safe to sleep.
C) Our bodies, particularly our eyes, are not capable of functioning properly at night.
D) There is no reason; it just became habitual in humans.

Question

Quizplus · Accepted Answer

Humans evolved to sleep at night because it was safer to rest when it was dark and visibility was low, reducing the risk of encountering predators.

Why Do Humans Sleep at Night Instead of During the Day