Yeah, I do do this. It was really bad as a kid (though that was decades ago). It got better in college (besides they thought I was odd enough!) partly because I took up running, which seemed to help. Something with the endorphins I think. It used to be with string or cloth strips.
These days its rubber bands, which fortunately doesn't earn me too many odd looks at work. Besides, if I get busy I don't do it. Since most people do a bit of it anyway, with stuff like rubber bands & worry stones. However, if I'm not careful I can almost space out a bit.
This is the first time in my life I've actually talked about this with ANYONE.. LOL
Sincerely,
Matt