Pullup
When you see someone walking around the gym with a big back, you can guarantee they can jump up and kill 15-20 pull-ups without even breaking a sweat. See the connection? Pull-ups and chin-ups are two of the best mass builders for the back. Targeting the lats, shoulders, biceps and grip, these exercises have so many different varieties, you’ll never get bored.Modifications:Change the grip; wide, narrow, alternatedChange the grip again; towels, thick ropes, two fingers, three fingers, glovesOverloaded; dip belt, med ball, sandbag, dumbbell, kettlebellChange the movement; side-to-side, slow negatives, holds, explosive