Quick, involuntary jerking movements of muscles or body parts that happen repeatedly.
From Old English 'twiccian' meaning 'to pull or pluck.' The word originally referred to a quick pulling motion and evolved to describe the involuntary muscle contractions we see today.
Twitching is your nervous system's way of sending signals—sometimes from stress, caffeine, or even excitement—which is why athletes and performers often twitch before big moments.
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