Muscles Worked: Triceps
Hold dumbbell with both hands, raise overhead to arms' length. Stand erect, head up, feet 16" apart. Rotate hands while raising dumbbell so top plates of dumbbell rest in palms, thumbs around handle. Keep upper arms close to head. Lower dumbbell in semicircular motion behind head until forearms touch biceps. Return to starting position. Inhale down, exhale up.