Science

How long is the sleep cycle?

1 Answer
ANSWER

A sleep cycle lasts about 90 minutes and during that time we move through five stages of sleep. The first four stages make up our non-rapid eye movement (NREM) sleep, and the fifth stage is when rapid eye movement (REM) sleep occurs.

{{ relativeTimeResolver(1548342499867) }}
LIVE
Points points 834
Rating 1
Sign-in to view all answers
Similar Questions
Science • 1 Answer
ANSWER
Science • 1 Answer
ANSWER
Science • 1 Answer
ANSWER
Science • 3 Answers
ANSWER
Science • 2 Answers
ANSWER

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world

LEARN MORE

Help Center Conditions of Use Privacy Notice

© 2010 - 2021, Amazon.com, inc. or its affiliates. All Rights Reserved.