In the late 1800s scientists began to interrogate the neurological basis of dreams. That changed in Sigmund Freud’s time but ...

We ask an expert why REM sleep is so important, what happens if we don't get enough of it and how to get more REM sleep.

I spent months testing the Oura Ring, Whoop, Google Pixel Watch, and Ultrahuman Ring AIR so you don’t have to. Here is what I ...

A new study showed that people who took longer to enter this dream phase of sleep had higher levels of amyloid beta and tau, ...

A board-certified sleep medicine specialist reviews the history of wearable sleep trackers and explains how clinicians ...

Compromised sleep continuity and initiation may underlie the link between depression and difficulty sleeping among older adults.

Recent studies have shown that both the quality and the amount of sleep we get may influence our risk of developing Alzheimer’s disease.

Scientists have discovered that rhythmic oscillations of a specific neurotransmitter play a vital role in clearing toxic proteins from the brain during non-rapid eye movement (non-REM) sleep. These ...

For every 1 gram per kilogram increase in alcohol dose, REM sleep duration was reduced by 40.4 minutes. Alcohol consumption adversely affects rapid eye movement (REM) sleep in a dose-dependent ...

If you are sleeping enough but still feel chronically tired, a doctor might recommend a sleep test using an electroencephalogram, or EEG, to detect disruptions that might be affecting the quality ...

During non-REM sleep, participants received auditory cues to reinforce positive memories and reduce negative ones.