HARD-CORE JUMP ROPING FOR EXTREME FITNESS You certainly jumped rope as a kid, but you probably didn't realize this fun activity is also a kickass workout for shredding all the major muscles-arms, legs, butt, abs, shoulders and chest. With this book, you turn a simple jump rope into a power tool to: Build muscle Boost endurance Amplify explosive power Improve agility Enhance overall fitness From beginning tips on proper form and picking the right rope to advanced tricks like double unders and knee tucks, Ultimate Jump Rope Workouts will teach you to jump like a pro and get in the best shape of your life.