This small temperature shift may make falling—and staying—asleep easier. Sleep can be a fickle thing: sometimes we succeed in staying off our phones and properly winding down before bed, but still ...

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 ...

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 ...

Now that we have wearables tracking our every move, a lot of us can look at stats that supposedly tell us how well we’ve slept the night before. But sometimes, it can feel like your sleep tracker is ...

Few experiences rival the calm satisfaction of falling asleep easily and waking up feeling fully rested. But sleep is more than a luxury or idle downtime, it’s a vital biological process that supports ...

Like many Americans, I know I need more sleep. I'm a night owl, often writing late into the night, but also a mom who gets up early with her kids. The result: I'm not getting enough rest.

Struggling to sleep during menopause? Experts explain how hormonal changes, night sweats and anxiety disrupt your sleep – and ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. Need another reason to prioritize your sleep ...