I got introduced to the swiss ball about 12 years ago. At first the swiss(stability) ball was used primarily for abdominals. The swiss ball has morphed into one of the best pieces of fitness equipment. You can do just about any exercise on the ball as well as a few new ones. One of the first things I tell my new soon to be moms is to get a swiss ball. At the very least, sitting on one will help your back. The swiss ball ranges in size from small to extra large. The following exercises are designed to engage your shoulders, chest and abs. Remember to try to keep your back flat(tuck your naval to your spine), and get your balance before you "slowly' start your exercises.