You’re going to laugh at me when you hear what I just bought; a Hawaii Hula Chair. After you finish rofling, consider this: I watched all the videos on the net about the chair. I looked at every manufacturer that I could find. It seems that this exercise helps with the posture muscles – the core muscles. There are days when I go to bed early simply because I can no longer sit up. I also read a review, (by a website that reviews exercise gear and does not sell Hula Chairs) suggesting that it might help with balance and coordination. These are all things with which I have significant problems. Also, I think it would work on the same muscles that are used by that Wii balance game/exercise, and I can tell you that my Wii really has helped me with balance. So I’ll let you know how it turns out. I suppose the worst that can happen is I have just bought an expensive conversation piece.