This work combines two of the most effective ways to train for fitness and sports performance: Swiss balls and medicine balls. Both methods of training can replicate specific sports movements, or create a platform ideally suited to train stabilizing muscles to improve agility and mobility. It shows athletes and fitness enthusiasts how to use Swiss ball and medicine ball exercises to develop greater strength and stability for muscle definition and sports performance. It presents strength exercises that target each of the major muscle groups, and enhance stabilization and flexibility.