You just have to visualized this. While sitting on a gym ball, hold a piece of cleaning cloth in each hand and start moving your hand in circular motion. There you go, that is part of the fitball exercise movement like polishing the mirror. Now you know why some housewife says they don’t need to sign up for expensive fitness classes. House chores act as a part of their weight loss products. Who the heck that stand on that principle must have big bum-bum.