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

Experts say it’s an important question to consider. Most of us spend a third of our lives sleeping, but you may need more or ...

More people are becoming obsessed with sleep trackers, causing insomnia and making sleep worse, experts say. Here’s how to tell if you have a problem.

Is the much vaunted eight hours of sleep enough to avoid health issues? Experts discuss why its important to wake up feeling ...

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

Your brain waves in REM sleep are closer to wakefulness ... awake to asleep and makes up less than 3% of your nightly sleep cycles. Stage 2 is where light sleep gets to work.

Mass General Brigham researchers have developed an AI tool that analyzes brain wave activity recorded during sleep using electroencephalography ... at the earlier stages of dementia, but not ...