Ooooh, twitchy woman...

We've all had it. The twitchy hand, the twitchy cheek muscle. My shop teacher in junior high had a wicked twitch around his eye that was often accompanied by a bulging vein in his forehead when he was pissed at us for fooling around in class. So what causes the twitch? The twitch is technically called a fasciculation, an involuntary movement of a set of muscle groups. When it happens only occasionally to a small group of muscles, it is not a thing to worry about. It can be triggered by fatigue, overexertion, caffeine, Sudafed or stress (explains my shop teacher). So a twitchy lip could mean that you've been doing to much kissing? Lucky you!