HOUSTON — A good night’s sleep is important for both the body and brain. It’s essential to understand the four stages of sleep and how to get more restful z’s. Stage 1: Transitional sleep The sleep ...

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 ...

Ever wonder why some mornings you wake up ready to go, and others you feel like a zombie? The difference often comes down to when you wake up during your sleep cycle, and that’s exactly what a sleep ...

What is core sleep is on your Apple Watch, and does it even matter? We look at which sleep stages matter most for quality ...

Deep sleep earlier in life could be the key to keeping healthy cognition. The key to keeping your wits about you as you age may lie in shut-eye during midlife. A study found that people over 60 who ...

Sleeping for 7 to 9 hours at night isn't the only way to catch some z's. Here are four alternative sleep cycles -- and they're pretty obscure. Annie Miller Medical Reviewer Annie Miller is a licensed ...

Thanks to the Internet, it's the age of self-diagnosis. People like to learn about (and treat) themselves through technology. As a sleep researcher, I was interested in my friends' use of ...

We often treat sleep like a luxury we can "catch up on" over the weekend, but your brain sees it differently. Sleep isn’t ...

The key to keeping your wits about you as you age may lie in shut-eye during midlife. A study found that people over 60 who didn’t get enough slow-wave sleep — the third stage in the human sleep cycle ...