The Evil Exercise Ball !!

We have all seen them,the big round exercise ball.Has anybody actually tried one of thsese things out. They are not as easy as they look, I had a rude discovery today. As I look over I see my trainer lying on her back, making it look oh so very simple I decide to try it out. Come to find out I have absolutly no coordination. I discovered how hard it was to keep your feet firm on the ground while going up and down. Not to mention the toll it takes on your back, or maybe that was because I was doing it wrong. The exercise ball is commonly used for ab and balance training. It is also called "The Swiss Ball" developed in 1968. Doing a little bit of research I discovered that it is not uncommon for people to use them for chairs, even in their office. There are many bennifits to the exercise ball. Therefore I would like to conqere the beast.