Doing pull ups is one of the best muscle building exercises. Not only does it work your back, but it also works your biceps, triceps and chest, depending on the type of pull up you do. Get yourself a pull up bar at home and you can do this amazing exercise without going to the gym. Don't know what pull up bar to get? We feature reviews of the most popular pull up bars, including wall mounted, doorway mounted and free standing pull up bars and chin up bars. We also have loads of informative articles to help you make a better buying decision.