Using a bench that can be angled at 45 degrees, lie down while facing up.

Pick up a dumbbell for each hand and bring the hands up to where they are aligned with the upper part of the chest. If someone is viewing you from the side, the elbows should be directly under the hands.

Press the dumbbells up in a straight, vertical line until the arms are fully extended. Focus on the chest muscles being the active engine behind allowing you to complete the movement.

Slowly descend until the hands are 1-3 inches above the breastbone.