Purpose of Exercise: To develop the outside head of the deltoid, with secondary benefit to the front and rear heads.
Take a dumbbell in each hand, bend forward slightly, and bring the weights together in front of you at arm’s length. Start each repetition from a dead stop to keep yourself from swinging the weight up. Lift the weights out and up to either side, turning your wrists slightly (as if pouring water out of a pitcher) so that the rear of the dumbbell is higher than your shoulders, then lower them slowly, resisting all the way down. Do not rock back and forth as this cuts the effectiveness of the movement.
Variations: This exercise can be done seated as well.