Abstract: An exercise routine includes holding an elastic band in clenched fists and rotating the fists against the elastic restraining force of the elastic band while obtaining leverage through the contact of both hands. In one approach the right arm is rotated in the clockwise direction while in another approach the right arm is rotated in the counter-clockwise direction. The left arm rotates in the opposite sense to that of the right arm. By rotating the fists, wrists, and lower arms against elastic force, the biceps and triceps muscles are worked, and by repeating the exercise over a controlled program of repetitions and sets with increasing resistance, the arm muscles can be strengthened.