Insomnia is often used as a catch-all term to describe a whole slew of sleep problems. Trouble falling asleep, waking up in the middle of the night and not being able to fall back asleep, and waking ...

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.

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Sleep also enables the body ...

Sleep inertia occurs when your body is fighting to stay asleep when you want it to wake up. It generally feels like a temporary disorientation and drop in performance or mood after you wake up. Here's ...

A nightcap might feel relaxing, but research shows it can fragment your sleep and reduce the quality of your rest.