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Why when I clench my fist for a few second and then relax my hand right after it stays in that fixated position ?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why when I clench my fist for a few second and then relax my hand right after it stays in that fixated position ?	1
Index finger twitching and hand muscle spasms when fist is closed how to relive symptoms ?	1