You may experience sleep paralysis if you wake during the dream phase of sleep. You may be more likely to see hallucinations during the rapid eye movement cycle. You wake up in the middle of the night ...

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 ...

What are sleep paralysis demons? Sleep paralysis demons are nightmarish hallucinations that often accompany episodes of sleep paralysis. This occurs when the temporary paralysis, which is a normal ...

You can always tell when something’s a little off with your sleep-paralysis demon. We’re talking about someone you’ve known for years, someone you share a bed with. It’s a big emotional hit to hear ...

A neuroscientist describes particular sleep disorders that occur while falling asleep and waking up. Hypnopompic hallucinations can happen with sleep paralysis, when body paralysis lingers during the ...

You're falling into a peaceful slumber; your body relaxes. Just as you're about to slip into sleep, you feel a dense pressure on your chest. It feels heavy, like an iron casket. You suddenly notice ...

(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 ...

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 ...

Sleep paralysis happens when you wake up (or fall asleep) and your body stays in the "sleep mode," meaning it can’t move—like you’ve been frozen in place. Your brain is fully awake, but your muscles ...