Sleep Cycles: One rapid eye movement (REM) stage and three non-REM stages that altogether last about 90 to 120 minutes Benefits: Physical and mental recuperation and memory consolidation Disorders: ...

How does your brain know when it's time to sleep? There are two main factors: Hours Awake. The longer you've been awake, the stronger your drive for sleep. Circadian Rhythm. Your body operates on a ...

(WXYZ) — Busy schedules can lead to less sleep, but a method called “sleep banking” might help you stay ahead of it. Sleep banking means “saving” or ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American We all know we should get more sleep, we're ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...