The exercise not only tones the back of the upper arm, but it works the back of the deltoid to define the shoulder as well the largest muscle of the back — the lats.
- Holding a pair of dumbbells with your feet hip-width distance apart, bend at the waist. Keep your back parallel to the floor with a neutral spine — not rounded. Palms should be facing each other.
- Keep your torso stable as you raise your arms behind you, squeezing your shoulder blades together. Hold the position for a moment.
- Lower your arms back to starting position to complete one rep.
- Do two to three sets.