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.

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

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

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 ...

Scientists have uncovered shocking new evidence about how deep sleep powers up your memory and why skimping on rest is ...

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 ...

It’s important to get adequate sleep, but you also want to ensure you’re getting restorative sleep. Investing in a sleep tracker is a great way to figure out whether you’re getting quality ...

Sleep can be divided into 2 phases — non-rapid eye movement (NREM) and rapid eye movement (REM) — and 4 stages that make a complete cycle. You’ll typically complete 4 to 6 cycles per night ...