Great exercises you can do using a stability ball. 

Trying to build the body of your dreams require a variety of exercises. Using a stability ball as a prop for your exercises helps develop strength and balance. A ball also gives you more variety to keep you from getting bored. It also strengthens your core which includes your back, abdominal muscles. 

Stability ball is also called a swiss ball, a physio ball and an exercise ball. Using a ball is great for strengthen your core. Stability balls are inexpensive and be purchased to local sporting or big box stores.