>I also am short, 5'2", but when I bought the ball for my
>height, I found when I sat on it, my knees were not lined up
>with my hips. Also when I did the shoulder exersises on the
>ball my arms hit the ground. I pumped the ball up with air as
>much as I could and still no go. Luckily I saved my receit
>and exchanged for the medium. It works much better for me.
>So I would start with the small but save your receit, incase
>you need the next size up. Deanie
Same happened to me. I'm 5'4", but with long legs and arms and very short torso. I think if you have long legs the medium works better.
Elena