Medically reviewed by Sanja Jelic, MD As we sleep, our brain moves through four stages and two phases: non-rapid eye movement ...

A person’s sleep needs are highly individual, Holliday-Bell says. If you feel refreshed and ready for the day after nine ...

Around 70% of college students report getting less than eight hours of sleep a night. With looming deadlines, buzzing social ...

Imagine the horrifying and unsettling thought of a spider crawling into your body while you sleep. A diver on an expedition ...

New memories are consolidated during sleep. What happens in the brain? At the University of Tsukuba, near Tokyo, Takeshi Sakurai studies the question with optogenetics—in which a laser turns ...

It's during dream sleep where we start to actually take the ... What is dreaming and what happens and are there any real benefits to dreaming? Well, to take a step back I think it's important ...

In basic terms, restorative sleep happens when brain activity during sleep helps restore your body and mind, essentially resetting you for another day of activity. Although experts continue to ...

Each night, we spend about two hours dreaming, most of which happens during REM sleep. During this stage, our brain waves are active, and our eyes move rapidly. But muscles experience temporary ...

Scientists have mapped the brain's electrical activity during lucid dreaming, offering unprecedented insights into this ...

Dr. Munir says that in addition to eyes becoming dry, sleeping in contacts irritates the eyes, causing small scratches to the surface of the cornea during sleep. “Together, these factors greatly ...