Good for you! You know that reminds me...my mother came to visit me on Friday and she saw my ball and asked what on Earth can you do on that thing? She has seen me workout with heavy weights, run, swim, fight on competitions when I was younger, etc. and she thought I was now going for the easy stuff. I had to give her a demo and of course I did the inverted v's (pikes). She was impressed! (Of course she doesn't know that when I do PUB I hit the pause button and either rest or do a couple of cardio intervals before the stability ball segment haha), but I don't think she's going to say "do you want that giant ball to play?" anymore.