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 ...

You wake up in the middle of the night and realize you cannot move. Your chest feels heavy, your breathing is shallow, and there is a strange pressure in the room. Maybe you sense someone standing ...

(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 ...