But how do sleep cycles work? To find out, I took part in a polysomnography. This is a gold standard sleep study that helps ...

However, some research shows that major stressors may increase REM sleep but reduce deep sleep. REM rebound, which is when we ...

More people are becoming obsessed with sleep trackers, causing insomnia and making sleep worse, experts say. Here’s how to ...

Insomnia is a big problem for older adults, and many researchers have said exercise is a good solution. Working out with ...

It's common among older adults to not get a consistent full night's rest, but there are ways to improve sleep issues. A sleep ...

Humans cycle through sleep stages roughly every 90 minutes. In the first portion of the night, Atwood said that more of the ...

ETH Zurich researchers found that pupil size changes during sleep, indicating shifts in brain activity. This could help ...

During this time, it uses your movements and your phone use, to detect whether you’re sleeping, and to estimate when you are in each stage of sleep. How to read your results from the Apple Watch ...

AI detects early signs of memory decline by analyzing brain waves during sleep. Researchers found subtle gamma wave changes.

Sleep training for babies is one of the most contentious topics in parenting. We asked an expert what people should consider ...