I've been using a standing desk for years now, and while you're not exactly doing jumping jacks the whole time, I certainly move a lot more than I do when I sit

I've been using a standing desk for years now, and while you're not exactly doing jumping jacks the whole time, I certainly move a lot more than I do when I sit down. Just shifting weight from leg to leg, changing standing position, occasionally stretching/touching my toes. You end up making many more small movements than when you're just plopped in a chair.