With your feet flat on the floor, extend your arms above your chest, keeping a slight bend in your elbows to prevent strain.
Slowly lower the dumbbells out to your sides in a wide arc as far as is comfortable, keeping your elbows slightly bent throughout the movement.
Pause for a moment at the bottom of the movement, then use your chest muscles to reverse the motion and bring the dumbbells back up to the starting position.
Repeat the exercise for the desired number of reps, ensuring to maintain control of the weights and moving in a slow, controlled manner.