Your brain cycles through several stages during sleep, and REM sleep might be the most critical. This mysterious phase, where dreams unfold and memories solidify, accounts for roughly a quarter of ...

The internet claims waking at the end of a sleep cycle will leave you refreshed, but experts aren’t convinced. By Clarissa Brincat Published Sep 9, 2025 9:00 AM EDT Image: DepositPhotos Get the ...

Although we know sleep is essential to our physical and mental well-being, it remains an incredibly enigmatic behavior, scientifically speaking. Researchers at the University of Michigan, however, may ...

A new study has found a link between rapid eye movement (REM) sleep and Alzheimer’s disease. The research from China, published in the journal Alzheimer’s & Dementia by the Alzheimer’s Association, ...

RBD is marked by loss of REM sleep atonia, leading to physical dream enactment. Polysomnography is essential to confirm RBD and rule out other disorders. Idiopathic RBD is a strong predictor of ...

A small snack may be doing more at bedtime than quieting a craving. Sleep researchers say one nut in particular lines up with the brain’s dream machinery. Pistachios are rich in melatonin and ...

A naturopathic doctor’s video explaining the viral phenomenon of the “second wind” and its effects on sleep hormones has gone viral, resonating with many night owls. In the clip, Dr Kara explains that ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. Baland Jalal lay in bed terrified ...

There's something oddly luxurious about sleeping in. The sun filters through the curtains, the alarm clock is blissfully silent, and your body stays at rest. Yet sleeping in is often treated as an ...

“Sleep is important to restore the body, but also to clear waste in the brain,” says Brian Koo, MD, a neurologist and assistant professor of neurology at Yale School of Medicine in New Haven, ...