When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images Have you ever woken up after sleeping, unable to move? Maybe you can see ...

You wake up in the middle of the night and realize you cannot move. Your chest feels heavy, your breathing is shallow, and ...

Medically reviewed by Valerie Cacho, MD Key Takeaways Sleep paralysis hallucinations happen when you’re waking up or falling ...

This is the terrifying reality of sleep paralysis. For centuries, people have struggled to explain this scary experience, and this has led to myths of night demons, witches, and even alien abductions.

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, ...

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) — 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 ...