Since I was little, I have had muscle jerks but never thought much of it until it started affecting me when I play video games.

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It's not a huge inconvenience, but sometimes my arm will shoot to the side on its own, or more commonly, I'll accidentally click on my mouse/keyboard without telling my body to move. Similar things happen in my legs, where I'll randomly kick a little. I am wondering if other people with anxiety experience this because I cannot think of any other reason this would happen.