Maybe you’ve seen the meme: “This is my sleep paralysis demon: [insert photo].” The viral idea builds on a very real condition in which a person is conscious but unable to move. In some cases, people ...

It’s the stuff of nightmares. You wake up, and you can’t move your body. A shadowy figure looms over you, but it feels too real to be a dream. If you’ve experienced this, you might have had a sleep ...

Add Yahoo as a preferred source to see more of our stories on Google. While prevalence varies (one study found it in as many as 38% of participants) researchers believe that generally, about 20% of ...

BERKELEY, Calif. — Baland Jalal lay in bed terrified, experiencing his own real-life horror film. Newly awake, the 19-year-old could see his surroundings but couldn't move or speak, and he didn't know ...

(CNN) — Baland Jalal lay in bed terrified, experiencing his own real-life horror film. Newly awake, the 19-year-old could see his surroundings but couldn’t move or speak, and he didn’t know why. He ...

Sleep paralysis can be a frightening experience where your mind wakes up and your body doesn't. While it isn’t dangerous, over 30% of the population have come up against sleep paralysis at some point ...

Sleep paralysis happens when you wake up but can't move for a few minutes. Stress and anxiety can trigger episodes of sleep paralysis. Sleep paralysis isn't dangerous, but it can make you feel uneasy.

Many people who experience sleep paralysis see frightening hallucinations some call "sleep paralysis demons." - Illustration by Leah Abucayan/Alberto Mier/CNN Sign up for CNN’s Sleep, But Better ...

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 ...