Deep sleep is the phase of sleep responsible for cell repair, clearing toxins, and processing info. You can get more deep sleep by taking a hot bath before bed and avoiding caffeine and alcohol.

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 ...

Ten little girls of various heights and ages ominously trailed my path as I stumbled down a monstrous hill, gasping for air and clawing at my chest, as if I could somehow break skin and reach into my ...

Deep sleep, like all sleep stages, helps you feel refreshed when you wake up. The proportion of time you need to spend in ...

Deep sleep is one of the most essential stages of the sleep cycle, playing a vital role in how well you feel both physically and mentally. Often referred to as slow-wave sleep or delta sleep, this ...

A deep, undisturbed sleep should be the norm, but modern lifestyle is taking a toll on the sleep cycle. Research says that maintaining a consistent sleep schedule is responsible for proper heart 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 ...