Why Do I Want to Bounce My Leg All the Time?

I can’t help but shake a leg every day, and I don’t mean dancing. When I sit down or lie down, I feel an uncontrollable urge to move my legs. They bounce for hours on end, and most of the time I don’t even notice it. When I do, I sometimes try to stop in case it’s annoying others around me, but that just makes me feel…