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The medical term is (BFS) benign fasciculation syndrome. Loosely translated, that means "probably not serious muscle tremor". Here's a video of a man's calf muscle with BFS. Like most benign conditions, it's not extensively studied. Research (fortunately) tends to go where's the greatest need and unraveling the mysteries of a harmless eye twitch doesn't get ...


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Sounds like a muscle spasm. It is caused by dehydration, mineral depletion and/or electrolyte abnormalities. They typically subside on their own. If not, go see a doc.



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