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 ...

Have you ever wondered what actually happens in the brain during sleep? While your body appears still and at rest, your brain remains highly active, carrying out essential processes that keep you ...

Two sleep doctors explain what deep sleep is, how much we need and the real number you should be looking for on your Apple Watch sleep tracker.

As scientists race to understand cognitive decline, a significant discovery shows how your nightly rest might be the key to maintaining brain health for decades. A breakthrough study has revealed that ...

You can see it coming in right there, that little spot,” says neuroscientist and engineer Laura Lewis. A remarkably bright pulsing dot has appeared on the monitor in front of us. We are watching, in ...

This transcript was prepared by a transcription service. This version may not be in its final form and may be updated. Charlotte Gartenberg: Do you find it hard to fall asleep? If you do, you're not ...

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 ...

Sleep is the body’s natural healer. When circadian rhythm breaks, immunity, mood, and metabolism suffer—yoga and breathwork ...