Lie on an incline bench set at 45 with a dumb-bell in each hand. Extend the dumb-bells straight overhead, palms facing each other.

Keeping your arms in a slightly bent position, which you maintain throughout the exercise, lower the dumb-bells out to each side with equal speed. You should feel your pecs stretch as you lower the weights. Stop when your upper arms are parallel to the floor and squeeze hard through your pecs to slowly raise the dumb-bells back to the top position. Repeat.