How long is a typical sleep cycle,in which a sleeper progresses through some or all of the sleep stages?
A)1 hour
B)90 minutes
C)120 minutes
D)5 hours

Question

Quizplus · Accepted Answer

A typical sleep cycle lasts around 90 minutes, and during this time, a sleeper progresses through all of the sleep stages. Therefore, the best choice is B. The other options are not accurate, as a sleep cycle is not typically only one hour, 120 minutes, or 5 hours.

How Long Is a Typical Sleep Cycle,in Which a Sleeper