Want an exercise that works your arms, shoulders, chest, upper back and abs at the same time? Try pull-ups. Muscles that aren’t directly involved in moving the body act as stabilizers, so they get a solid workout. There is no better exercise for developing a wide-V back than pull-ups. Modern exercise machines make it possible for anyone to get an upper body pull-up workout. If you can’t do a pull-up, have a partner spot you at your hips or use a pull-up assist machine. If you are a pull-up dynamo, run a chain through some weights and attach it to your weight belt. The chin-up is the easiest way to start: Using a supinated (palms up) grip, grasp the bar at shoulder width and begin from a full hang. Pull up until your chin reaches the bar, and then lower your body under control to the starting position. The next level of difficulty is to use a pronated grip (palms down) and do the exercise the same way. The most advanced technique is to use a wide grip and do the exercise either to your front or behind the neck. Wide-grip pull-ups put more stress on your rhomboid muscles. The pull-up is probably the best all-around upper body exercise. Make it part of your routine.