I think it counts as "incidental" physical activity which has been studied for its health benefits. http://well.blogs.nytimes.com/2011/05/11/fidgeting-your-way

I think it counts as "incidental" physical activity which has been studied for its health benefits. http://well.blogs.nytimes.com/2011/05/11/fidgeting-your-way-to-fitness/ http://well.blogs.nytimes.com/2011/05/11/fidgeting-your-way-...