Yoga Ball offers you much more freedom and options to combine different elements of workout to create a more fun and entertaining experience and work more parts of your body. This excersice ball easily cultivates your balance and awakens your deep muscles, as with a potentially movable base, you will have to work harder to maintain your balance. With this stability ball for gym, people with lower back injury can even do sit-ups under professional guidance. This pregnancy ball is heavy and stable helper for pregnant ladies, it facilitates the process of delivery as well. This physio ball is truly a life saver.