Making small restless movements with your body because you're nervous, bored, or uncomfortable.
From 'fidget' (possibly from Scandinavian origin, related to 'fiddle'). The word emerged in the 17th century to describe constant small movements.
Science shows that fidgeting actually helps some people think better and concentrate—so those kids tapping their feet in class might not be being disruptive, they might be optimizing their brains!
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