In Kettlebell Rx, CrossFit certification instructor and world-renowned Kettlebell coach Jeff Martone teaches you how to toughen-up your body, develop unbelievable conditioning and stamina, and acquire a chiseled physique by wielding the ball of iron known as the kettlebell. Drawing on his world-wide research and the thousands of classes he has taught to athletes around the world, he breaks down kettlebell training like never before. He offers hundreds of movements,

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