Rear Delt Fly

Stand with your feet shoulder-width apart and hold a dumbbell in each hand, palms facing your body. Bend your knees slightly and hinge forward at the hips, keeping your back straight and core engaged. Raise your arms out to the sides, keeping a slight bend in your elbows, until they are parallel to the floor. Pause for a moment at the top, then slowly lower your arms back down to the starting position. Repeat for the desired number of repetitions.