The Cable Crossover: This exercise is highly effective for training the pectoral muscles but is also rather complex. Injuries can easily occur on this exercise if not done properly so I highly recommend hiring a trainer or getting a demonstration from an experienced lifter. Using a dual adjustable cable system, handles for this exercise should be placed at shoulder level. The exerciser should first center himself directly in the middle of the system, then grab one handle at a time and bring them into his chest. He should then step forward with one foot while still keeping the handles at the chest. The arms should then be pushed forward with the palms facing each other. Once the arms are fully extended, the palms must be turned face down. The exerciser will then slowly bring his arms back toward the cable system on an inhale until a 90 degree angle is achieved in the elbow and a comfortable stretch is felt going through the pecs. He will then exhale and press forward just as in the push- up and bench press exercises. However, this time he will cross his arms completely over one another at the end of the movement, squeezing the pecs. Care should be taken to alternate arms during the crossover action (right over left, then left over right). Once muscular fatigue is reached, the exerciser must finish in the extended position with his arms crossed over one another. The hands should immediately be brought to the chest, and the exerciser should then step backward behind the cables. I have seen many people hurt themselves by not bringing their hands back into their chest, but rather allowing their shoulder to go into extreme hyperextension to return the weight, which can damage the rotator cuff. The crossing effect of this exercise actually provides a larger ROM for the pecs than the other listed exercises which is what makes it so effective. However, as you have read, it is complex and care should be taken to get a live demonstration before attempting to perform it.