When it comes to exercise, chin ups and pull ups are one of the best demonstrations of upper-body strength. There is something impressive about lifting your whole body up repeatedly while dangling on a bar. Not only are they are an impressive strength feat, but they are a fantastic mass building exercises in developing back musculature. The perfect exercise to focus on this winter. 

While arms and chest often take precedent over the muscle groups behind us, nothing is more impressive than a big muscular back. The back muscles are an impressive group to train. They have so many functions and can be hit in so many ways, from so many angles, using such a variety of exercises. That said, as always you should focus on staples such as pull-ups, rows, and a few pull-downs. The problem with back training is, a lot of ego gets in the way and form often gets sacrificed. While it's important to move a decent amount of weight and put some...