Muscle Group: Triceps
We are going to focus on getting a full range of motion with this exercise. Control is the name of the game here. Take a seat on a bench or chair. With a dumbbell in one hand raise the arm upward. Your palm should face forward (same direction as your eyes). Remember to keep your elbow as high and as far back as possible at all times.
With your palm facing forward and arm fully extended upward, lower the dumbbell across the back of your head until the triceps are fully stretched. When you get a full stretch, keep your elbow still and raise the weight back up slowly.