Many health recommendations focus on diet and exercise. New research, however, suggests that sleep plays a greater role than ...

Just as a single night of insomnia may leave you feeling groggy and cranky, solid slumber can help you feel rested and ready to take on the day. How well you sleep over time, however, can influence ...

Let's talk about one of the most confusing terms you’ll see on your fitness tracker—specifically your Apple Watch. Next to REM sleep, which you’ve probably heard of, and “deep” sleep, which feels self ...