Have you ever woken up in the middle of the night after a terrifying dream? or even sleep paralysis—the inability to wake up from a sleep while feeling pressed down. Experts say your sleeping position ...

I can't breathe. There's a tremendous pressure in my chest. I'm panicking, and then I realize I can't move. I try to scream. Suddenly, violently, I'm startled awake, sweaty, shaking, and disoriented.

Have you ever opened your eyes in the middle of the night and realized you could not move a single part of your body? Your brain feels awake, but your arms, legs, even your voice, feel locked. Some ...

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 ...

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, ...

Sleep paralysis often occurs with sleep deprivation or poor sleep habits. People with sleep disorders like insomnia or sleep apnea may have more frequent sleep paralysis. Stress and mental health ...

Sleep Cycles: One rapid eye movement (REM) stage and three non-REM stages that altogether last about 90 to 120 minutes Benefits: Physical and mental recuperation and memory consolidation Disorders: ...

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 ...