What are the functions of REM sleep?

During REM sleep, your brain consolidates memories you made during the day. Learn more from Michael Timothy Smith, MA, PhD, director of the Behavioral Sleep Medicine Program at Johns Hopkins University, in this HealthMakers video.

The relationship between sleep and heart health may be a two-way street. Here’s what you need to know to improve both.

Constant caffeine, skipped workouts and other perils of the late-night worker.

Too much screen time can harm sleep, mood, and much more.

Are you wondering if this popular supplement is a safe way to get more sleep? Get the facts.

Learn how sleep loss factors into higher anxiety and depression rates—and what to do about it.