Tricep Extension - While the biceps bend the elbow, the triceps extend the arm from the elbow joint. They are being called to act in the chest press and shoulder press movements, but if you want to work that "back of the arm" area, incorporate a movement that begins with the elbow bent, and then pushes, against resistance, to extend (straighten) the arm. This can be done with a dumbbell in each hand lying on the floor, with a single dumbbell or a barbell overhead, with one arm at a time in a rear tricep extension, or pushing downward on a high pulley cable
