Slowly and without momentum begin lifting the dumbbells out to each side of the body. Try to move your whole arm together, or at least make sure that the elbows are leading the movement. Do not lift your torso as you lift. Focus on isolation of the rear deltoid muscles, and make them work hard. Make sure that you life the dumbbells straight out to your sides rather than behind you. Bring the dumbbells level with your shoulders or slightly higher.