Position yourself for this exercise by standing in between two cable pieces that are placed in a high position over your head. You should be holding one pulley in each hand. Once you have a pulley in each hand, step forward so that your body is in front of the plane of the pulleys. Bend your torso forward slightly and ensure that your elbows are slightly bent (this will prevent stress on your bicep tendons). Extend your arms out in a wide arc, to the point that you can feel your chest muscles stretching, and then return your arms to the starting position. Throughout this entire movement, ensure that the only motion occurs at the shoulder joint. You want to keep your torso, arm angle, and legs stationary so that you can focus on engaging your chest muscles in order to bring the cables together.