I did that too. Then I stopped because I saw it as a.. defect? And then I had to pick it up again :) It gives me some "exercise" while sitting. All the time whe

I did that too. Then I stopped because I saw it as a.. defect? And then I had to pick it up again :) It gives me some "exercise" while sitting. All the time when I really have to think hard I do it more. For sure there is a link there. Brain needs more blood, muscles deliver it?