It’s hard to beat the pull-up for a single exercise that does more to sculpt the entire upper-body. This exercise involves 9 primary muscle groups. It’s not the easiest exercise to master so completing a single full body-weight rep gives you a right to boast. If you want to conquer this all around upper-body movement start with the assisted pull-up/dip machine or have a workout partner help boost you through any sticking points. Do a few reps 3 times each week and before long you’ll crank out a full-body rep. Where you go from there only time will tell. Give it a try!