Blood vessels in the brain rhythmically constrict and dilate to drive waves of cleansing fluid through the organ.

Two new studies suggest once again the importance of getting a good night's sleep for good health over a lifetime, as scientists pursue new understandings of restorative deep sleep.

A recent survey from the American Academy of Sleep Medicine highlights a surprising paradox: 81% of Americans report losing ...

From sleep apnea-fighting mattresses to smart rings that play lullabies, the best sleep tech from Day 1 of CES 2025 ...

The brain's waste-removal process is "like turning on the dishwasher," a neurologist says, but common sleep medications may ...

Discover the hidden factors behind the sleep crisis affecting Black Americans and its impact on health disparities. Learn ...

Relationship problems, or even the worst-case scenario — an affair? You may want to start by looking at your sleep habits as a couple, said Dr. Phyllis Zee, chief of sleep medicine at ...

Lynne Peeples was on a quest to better understand circadian rhythm, so she stayed in a bunker 50 feet below ground for ten days straight.

Sleep disorders are fairly common in older adults, resulting in many getting less sleep than they need. This may be due to reasons including: medications health issues underlying sleep disorders ...

Sleep headphones can help you get better sleep. Here are the best ones you can get, ranging from noise-canceling earbuds to Bluetooth headbands, tested by CNET’s experts. Aly Lopez is a writer ...

Sleeper sofas used to be unattractive and uncomfortable—but not anymore. We sought out the best sleeper sofas of 2025 that ...

Sleep – we all need it, and a lot of us don’t get enough. But why is it important, and how do we make sure we’re getting what we need? Sleep is really important in keeping us physically and ...