Book excerpt: The use of medicine balls to enhance health, fitness, and sport performance dates back 2,500 years to the ancient Greeks. While the popularity of these exercise-training devices declined somewhat beginning in the 1930s, athletes and fitness enthusiasts are now discovering the many benefits that can be achieved by utilizing medicine balls in their training programs. This book presents a comprehensive training approach to medicine ball training for individuals of all ages and fitness levels. -- from Preface.