Chin-ups, like squats, also work several muscle groups, thereby stimulating significant overall muscle growth. To begin, grasp the chin-up bar with a palmsup grip. (You may require straps to reinforce your grip for the required number of repetitions.) Slowly begin to contract the muscles in your arms, and try to touch the bar to your lower chest when you have reached the apex of your ascent. Hold this contracted position for a two-count, and then lower yourself slowly (four seconds) back to the starting position, all the while making sure that the latissimus dorsi...