Standing, take a dumbbell of equal weight in each hand. Slightly bend your knees and lean forward bending at the waist until your back is nearly parallel with the ground. Your arms should hang straight down from your body with your palms facing your thighs and your shoulder blades slightly pinched together. Then, using your rear deltoids, drive your elbows up and out, keeping your arms bent. Your elbows should be lifted until they are at the same height as your shoulders. Then, lower the weight to the original starting position.