8 Killer Chinup Challenges

If you've ever watched men's gymnastics during the Olympics, you were probably impressed at the upper-back development of the gymnasts who competed in the still rings. In these athletes' training, chinups are essential. This one simple exercise actually does a lot of body sculpting, including working the latissimus dorsi, teres major, posterior deltoid, rhomboids, the sternal portion of the pectoralis major, the lower portions of the trapezius, and the elbow flexors. They also stimulate growth i