A new study from Bar-Ilan University shows that one of sleep's core functions originated hundreds of millions of years ago in jellyfish and sea anemones, among the earliest creatures with nervous ...

It might be worth working a little bit harder to get that much-desired, but often elusive, good night's sleep. Deep sleep clears the mind of waste just as a "dishwasher" cleans dirty plates and ...

How does the brain clean itself during sleep? A new ultrafast MRI method tracks cerebrospinal fluid flow without contrast ...

A new study by an interdisciplinary team of researchers at The University of Texas at Austin provides what may be the most reliable validation to date of the connection between physical activity, ...