Medicine balls are having a resurgence as a hot fitness item because on the boom in functional training (like CrossFit) and unbalanced training (all the balls)Other medicine ball books and selling very well at $18.95 and $21.95 while this book is aggressively priced to sell at $14.95Includes beginner, intermediate and advanced medicine ball programs for users at all levelsFeatures over 100 step-by-step exercises and 250 black-and-white photos Author has written several of the popular 7 Weeks books