The body row is an excellent exercise for those who are not yet able to perform pull-ups. Typically they're performed on rings, but can also be performed on an adjustable bar, such as a barbell placed in a power rack. The difficulty of the movement can be increased by lowering the rings or bar and moving the feet forward. Eventually, the feet can even be elevated and the rings lowered until the body is horizontal or lower at the start. Keep the entire body tight and rigid – don't sag or pike during the movement. Also an excellent exercise to strengthen scapular retraction ability in individuals with poor scapular stability.