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 ...

Research once viewed sleep as a passive state of “nothingness,” but modern neuroscience has revealed it to be a highly active, complex, and essential biological process. Far from being “down time,” ...

In my last post, I asked, "Are you getting enough sleep?" Today, in an effort to better understand the role of sleep in our lives, I ask a very basic question: What happens when our heads hit the ...