With more than 5,000 customizable solutions in this book, you pick the exercises. You decide the workout, the location, the duration and the intensity. Finally, a leaner middle and a stronger core. Former editor-in-chief of Men's Fitness, Michael de Medeiros, and "King of Abs," Kendall Wood, have handpicked the most effective exercises to target all areas of your midsection. Crafting your core has never been so simple.