Add Yahoo as a preferred source to see more of our stories on Google. REM sleep is the stage in which one dreams and it gets a lot of attention, often from those looking to improve their sleep. But ...

When we go into rapid eye movement or REM sleep most of the muscles in our body are paralyzed so that we cannot move. The most common explanation you will hear from sleep scientists for this strange ...

Many people who experience sleep paralysis see frightening hallucinations some call "sleep paralysis demons." - Illustration by Leah Abucayan/Alberto Mier/CNN Baland Jalal lay in bed terrified, ...

You wake up out of a murky sleep and find that you’re unable to move your body, from your forehead all the way down to your little toe. You’re completely paralyzed! You also have a crushing feeling in ...

Sleep paralysis is "a condition where you feel paralyzed just before falling asleep or, more commonly, when you first wake up in the morning," says Kevin Walker, MD, the medical director of ...

It's sort of unsettling to think that our body paralyzes itself during sleep, but that is essentially what happens for large portions of the night when your body's getting the sleep it needs. You've ...

Some people who act out their dreams, screaming, laughing and even getting violent during sleep, may develop dementia in ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. Baland Jalal lay in bed terrified ...

(CNN) — Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. Baland Jalal lay in bed terrified, experiencing his own real-life horror ...

(CNN) — Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. CNN — (CNN) — Sign up for CNN’s Sleep, But Better newsletter series. Our ...