Originally Posted by MadQuilter
My nephew uses one but it is for his attention deficit. It seems to keep him more focused when he has to do homework. Sorry, don't know where to get them though.
A gal at work uses one of the large exercise balls instead of a chair. She says it helps her back, her posture and her core balance.
I have a one of those large exercise balls as well. I use it when I'm sitting at the computer. I like to try to balance on it. It's great for low back pain.