Yet stages 1 through 4 have been labeled as non-REM sleep, or NREM—80 percent of sleep is defined by what it’s not. Sleep scientists speculate that specific sequences of NREM and REM sleep ...

Most marathon training blocks last between 12 and 18 weeks, which is a long time to be pushing your body through its paces.

Discover what causes sleep talking, whether your nighttime chatter reveals hidden secrets, and how to reduce these nocturnal ...

While it's well known that sleep enhances cognitive performance, the underlying neural mechanisms, particularly those related to nonrapid eye movement (NREM) sleep, remain largely unexplored.

Discover how sleep influences physical and mental health, improves daily performance, and helps prevent chronic conditions.

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical savvy and wide-ranging interest in the technological arts and sciences, Ars ...

This is also where we discovered the importance of slow-wave sleep (SWS), characterized by relatively slow delta waves. It’s the third stage in non-rapid eye movement (NREM) sleep, characterized ...

A new study has found a positive relationship between quality sleep and gut-healthy foods like probiotics, prebiotics and fermented foods.

lighter non-rapid eye movement (NREM) sleep and deeper rapid eye movement (REM) sleep, where most, although not all, dreaming happens. Dogs devote more of their total sleep time to REM (roughly 2.9 ...