Light sleep is the beginning of your sleep cycle and your body's way of winding down. Breathing, heart rate and muscle changes prepare your body for the deeper sleep to come. Light sleep is broken ...

Sleep takes up nearly a third of our lives, yet much of what happens during those quiet hours remains unseen. Once thought to ...

If you’ve ever wondered whether deep sleep or REM sleep is “more important,” think of it like comparing cardio to weight training. Both are essential. Both overlap in benefits when done intensely.

We talked to sleep doctors about the tell-tale signs of not getting enough deep sleep and what to do about it. What is deep sleep? There are two primary sleep phases: rapid eye movement (REM) and ...

Need another reason to prioritize your sleep? Not spending enough time in the two deep stages of sleep — slow-wave and rapid eye movement, or REM, sleep — may hasten the deterioration of parts of the ...

(CNN) — Need another reason to prioritize your sleep? Not spending enough time in the two deep stages of sleep — slow-wave and rapid eye movement, or REM, sleep — may hasten the deterioration of parts ...

A naturopathic doctor’s video explaining the viral phenomenon of the “second wind” and its effects on sleep hormones has gone ...