Here’s what you’ll learn when you read this story: We have evolved a sleep cycle that goes from non-REM to REM sleep and back again, but until now, the biological function of this oscillation was ...

You wake up to your partner telling you that you had an entire conversation with someone named Bob last night, or your roommate mentions you were giving what sounded like a presentation in your sleep.

Add Yahoo as a preferred source to see more of our stories on Google. MIT study reveals how sleep deprivation causes your brain to flush itself clean while you’re awake, disrupting focus and ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. REM sleep and deep sleep ...

You've probably already noticed what happens to your day when you don't get the recommended 7 hours of sleep the night before. You might not be as alert as usual, or you may find yourself with a ...

Turning our clocks ahead next weekend, will rob us all of an hour – as we are sleeping. With World Sleep Day coming up on Friday (March 13), and in honor of Brain Awareness Week that starts Monday ...

When you’re short on sleep and your focus suddenly drifts, your brain may be briefly slipping into cleanup mode. Scientists discovered that these attention lapses coincide with waves of fluid washing ...

If you find it hard to focus after a wakeful night, it’s because your brain is busy trying to catch up on crucial housekeeping. Nearly everyone has experienced it—after a night of poor sleep, your ...

Quality of sleep is just as essential to your overall health as nutrition, hydration, and physical activity. Yet many people underestimate how critical sleep is for physical, mental, and emotional ...

CAMBRIDGE, MA -- Nearly everyone has experienced it: After a night of poor sleep, you don’t feel as alert as you should. Your brain might seem foggy, and your mind drifts off when you should be paying ...