Deep sleep refers to slow-wave sleep — a stage in the sleep cycle when brain waves slow down. Getting enough deep sleep is crucial for numerous bodily functions. But how to increase deep sleep isn’t ...

A good night's sleep does more than just help you feel rested--it might literally clear your mind. A new study shows how deep sleep may wash away waste buildup in the brain during waking hours, an ...

Two particular phases in your nightly routine seem to play outsize roles in cognitive health. By Mohana Ravindranath A good night’s sleep isn’t just about the number of hours you log. Getting quality ...

Many things go into getting a good night’s rest — including getting enough deep sleep. While “deep” and “quality” sleep might sound interchangeable, deep sleep is actually one of the four sleep stages ...

Don’t sleep on an early bedtime. The average American goes to bed at 11.39 p.m., but one expert says we should be preparing for shut eye hours earlier than that. Nutritionist Kate Booker says the best ...

It might be worth working a little bit harder to get that much-desired, but often elusive, good night's sleep. Deep sleep clears the mind of waste just as a "dishwasher" cleans dirty plates and ...

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 ...

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 ...

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 ...

ThisWorks Deep Sleep Pillow Spray is a popular sleep aid with over 12 million units sold worldwide. The spray uses a functional fragrance of Lavender, Vetivert, and Camomile to help calm the mind.