Lie on an incline bench (set at an angle less than 60 degrees to avoid placing too much emphasis on the deltoids) with your elbows bent. Hold the dumbbells with an overhand grip.
1. Inhale and extend your arms until the weights touch. Do not lock your elbows in the straightened position.
2. Exhale while completing the movement. Repeat the next repetition.
Notes:
This exercise works the pectorals (particularly the upper part) and also stretches them. It also works the anterior deltoids, serratus anterior, pectoralis minor and triceps. The latter two muscles help to stabilize the scapulae and allow the arm to work with the torso.
To isolate the effort on the upper pectorals, start the movement with an overhand grip and rotate your wrists so the dumbbells face each other.