1- Lay on your back on a bench, holding the dumbbells with straight but not locked arms, perpendicular above the chest with neutral grip.
2- Inhale and lower the dumbbells outward and horizontally, while bending the elbows slightly as weighs go down, and directing palms to the front.
3- Bring the dumbbells back up to the starting position, exhale at the end of the movement and repeat.
Tips and Advices:
1- Avoid excessive lowering of the dumbbells to the sides to avoid injury.
2- The more the dumbbells descend the more the pectoralis muscles stretches.
Variation:
1- Cable Standing Fly