Works: upper back, sides of torso, backs of shoulders, backs of upper arms
A. Lie face up, holding one dumbbell securely in both hands, arms reaching toward the ceiling and dumbbell aligned over your chest. Bend your legs, feet on the floor and knees pointing up.
B. With abs tight and a firm grip on the dumbbell, slowly extend your arms over your head and behind you, keeping your elbows slightly bent and upper arms close to your ears.
C. When your arms are about parallel to the floor, return to starting position. Do eight to 12 repetitions.