Sleeping fewer than 4.5 hours and more than 6.5 hours per night is associated with cognitive decline, according to researchers. In a recent study published in Oxford Academic's Brain, a team from the ...

Any sleep tracker will show you that slumber is far from a passive affair. And no stage of sleep demonstrates that better than rapid eye movement, or REM, commonly called dream sleep. “It’s also ...

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 ...

Introduction: The cardiovascular system (CVS) is heavily influenced by the autonomic nervous system. Additionally, there is a functional alteration during the various stages of sleep. In nonrapid eye ...

New research analyzing data from dozens of sleep studies has identified a dramatic change to the nature and purpose of sleep in babies, occurring around the age of two. The discovery suggests sleep ...

In a recent study published in JAMA Network Open, researchers created the Sleep and Dementia Consortium, comprising five population-based cohort studies. Study: Sleep Architecture, Obstructive Sleep ...

Your sleep cycle includes light, slow-wave, deep, and REM sleep, which repeat throughout the night. To get restful sleep, you need to spend the right amount of time in each stage of the sleep cycle.

Our sleep is marked by cycles of distinct brain activity. The most well-known of these is probably rapid eye movement, or REM sleep, which is characterized by loss of muscle control leading to ...