New and novel fitness gadgets come and go, but the stability ball -- also known as a Swiss ball or fitball -- has earned a great reputation in fitness centers and home gyms everywhere. Adding a stability ball to your strength training routine can help you build balance and build upper body and abdominal strength. Not only that, the ball is inexpensive and easy to find, and it's a pretty low-tech piece of a equipment that's easy to learn how to use. After you choose one that's correctly sized, check out these exercises to get you started on your new fitness toy. It won't be long before you see results!