if i sit on one of these balls and bounce for like 15 minutes a day,, could it make your butt small? i kinda get hot when doing it so could it make my butt small..

http://www.exercise-ball.biz/images/exercise_ball/exercise_ball_blue.jpg

i hope it doesnt because i love my big butt i dont want it to shrink so what do u think?


its so fun bouning on it like a bouncy castle and i really enjoy it but i cant enjoy it when thinkin my butts shrinking lol