A pull-up bar can be mounted in a doorway, on a wall, or as part of a power rack. It enables pull-ups, chin-ups, hanging leg raises, and other bodyweight exercises that build the lats, biceps, forearms, and grip strength. Doorway models require no permanent installation, making them ideal for home users. Pull-ups are one of the best indicators of relative upper-body strength. The bar can also be used with resistance bands for assisted reps. It is simple, affordable, and highly effective for building a stronger back and arms.