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 ...

"Just one night of deep sleep can train your immune system to fight viruses, bacteria, germs, and all of the bad stuff within ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. It’s no hidden health secret that sleep is really good for us. It ...

Actually, maybe you do. But maybe you don’t. The point is: There’s nothing set in stone about getting eight hours. “While the recommendation for most adults is still around seven to nine hours of ...

If you struggle with sleep, perhaps one of these noise colors can help you have sweet dreams. This is who they're best for.