Cable Crossover For Sale Cable crossover exercise is great for working the center (inner portion) of the chest. There is some front deltoid involvement as well. The main advantage of the cable over dumbbells or a machine is that you can bring your arms either toward your abdomen or toward your head (or anywhere else between these two points) to change the angle at which the pectoralis muscles work. In fact, the chest area should be worked at a variety of angles.