I know this person who's always fidgeting with things. For example, in a restaurant he'll continuously move the straw in the cup in an up and down motion and he'll play with his napkin and straw wrapper. If he's got change in his pocket, he'll jiggle it around. He tends to this when he's nervous or bored. I'm kind of like this guy but to a lesser extreme. I used to fidget a lot more with things. Now that I'm more aware of it, I do it less.
Are there certain types who are more likely to resort to fidgeting with objects as a means of keeping occupied or releasing some nervous energy?