Most of us have had nightmares involving scary monsters at some point in our lives. But that fear pales in comparison with the seemingly real mysterious and menacing figure who has people around the ...

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.

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 ...