Lie flat on the bench so that your head, upper back, lower back, and both feet are firmly pressed against the bench and ground at all points while holding two dumbbells at shoulder level with an overhand grip.
Hold one dumbbell in each hand at shoulder level with your arms fully outstretched to your sides and palms facing up.
Exhale and bring your arms together.
Continue bringing your arms together until your hands are about 1 inch from each other.
Inhale and lower the dumbbells until you return to the starting position.