1. Start with your entire body straight and arms fully extended over your head. When doing this exercise, your arms should stay at your sides and therefore you should never actually see your hands (if you are looking straight down at the floor). 2. Lean into the movement to get the full effect. Bring your arms to your sides while only bending your elbows. Again, be sure to keep your hands as your sides, do not let them dip behind your back or be too far in front of your face. 3. Once your arms are at your sides and your arms are bent, return to the starting position while continuing to lean into the exercise. 4. You will feel this exercise in your upper back around your shoulder blades. This is your latissimus dorsi and trapezius muscle.