Essentially, sleep is divided into two stages – non-rapid eye movement (non-REM, which the researchers refer to as NREM) sleep and REM sleep – and it's widely understood both play distinct roles in ...

Sleep is one of life’s most universal behaviors. Despite its ubiquity, it’s also one of the most mysterious. Humans spend ...

New research published in the journal Sleep Health has found that sleep fragmentation, which refers to the amount of time ...

Experiment conducted by researchers at the University of California, Berkeley Feb. 1, 2013 — -- An experiment at the University of California, Berkeley, found that seniors enjoy less quality ...

Reports show many Americans are not getting enough sleep. That can cause all kinds of health issues and even impact our memory. “One of the cool things about researching sleep and practicing sleep ...

Inside the body, a 24-hour rhythm, known as the circadian rhythm, quietly coordinates when we sleep, wake, eat and recover.

Think your brain’s taking a vacation when you’re sleeping? Think again. Scientists at Charité – Universitätsmedizin Berlin just dropped some major knowledge bombs about what’s really going down during ...

Obstructive sleep apnea, a condition that causes lower oxygen levels during sleep, is linked to degeneration of brain regions associated with memory through damage to the brain's small blood vessels, ...

Here’s a fact that might surprise you: we really do not know why we sleep. Of course, we sleep because our bodies demand it; we know we require sleep for our survival. But we’ve yet to discover the ...

A study from June 2025 suggested there’s one issue that’s clearly linked to a whopping 172 diseases. Perhaps even scarier, it’s a common one: disrupted sleep patterns. Researchers looked at more than ...

A guest takes a puff from a marijuana cigarette at the Sensi Magazine party celebrating the 420 holiday in the Bel Air section of Los Angeles, April 20, 2019. Richard Vogel / ASSOCIATED PRESS As ...