Muscle twitches fall into two main types. There’s myoclonus, where a whole muscle or group of muscles twitch or spasm. Then ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images It tends to happen when you’re just about to drift off where your legs or ...

That sudden jolt or twitch just as you’re drifting into sleep isn’t your imagination. It’s a real physiological event. One moment, you’re fading into slumber, and the next, your arm or leg flings out ...

While sitting still at your desk or watching TV, you sense a feeling of muscular discomfort in your arm or leg. It’s not quite a charley horse, but you can see your skin pulsating involuntarily, as if ...

Ever felt like you were about to fall into a hole just as you were dozing off, and then your body suddenly jolts you awake to avoid it? It's a common thing – we’ve all felt that at some point in our ...

Infectious agents can cause muscle twitching and spasms, too. The most commonly known is probably tetanus, which causes a phenomenon called lockjaw, where the neck and jaw muscles contract to the ...