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 ...

Between jobs, school, kids, and other physical and mental tolls on our time and energy, we could all use better, more restful sleep. There’s no question that good shut-eye is important for our health.

This story is adapted from Life Kit's Guide to Better Sleep, a one-week email series. Sign up for the special newsletter here. Do you have a wind-down routine? Enjoyable and relaxing habits that help ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. When Dr. Luc Beaudoin was an undergraduate ...