The inverted row is an exercise in calisthenics. It primarily works the muscles of the upper back—the trapezius and latissimus dorsi—as well as the biceps as a secondary muscle group. The supine row is normally carried out in three to five sets, but repetitions depend on the type of training a lifter is using to make their required gains. This exercise is lighter on the joints compared to weighted rows. The exercise can also be performed with mixed, underhand, or overhand grips with either wide or narrow hand placement.