My brother, who works as a fitness trainer as a gym, where he also does some office work, says that they had exercise balls for the desks, and he was relieved w

My brother, who works as a fitness trainer as a gym, where he also does some office work, says that they had exercise balls for the desks, and he was relieved when he convinced them to go to chairs. He believes the balls are really good for a change, and using them for two to five minutes is great, but that they aren't something you want to use all day.