Sculpt your arms, back, shoulders and abs with this bestselling guide to mastering one of the greatest body-weight exercises of all time. . . the pull up. Follow the 7-week program in this book and you'll massively increase your strength, muscle tone and overall fitness to such an extreme that you'll be able to do 10, 20 or even an amazing 50 consecutive pull-ups Offering several field-tested, day-by-day plans, this book has...