Lie face up holding a dumbbell in each hand, arms straight out to the sides and elbows bent. Weights should be directly over elbows. Knees are bent with feet on the ground. Lift hips, squeezing glutes so that your body is like a flat board from your knees to your shoulders. Hold lower body in this pose.
Slowly extend arms straight up over chest; hold for 3 counts, then slowly lower back to start. Repeat Chest press 12-15 reps while keeping hips lifted and glutes squeezing throughout the set (pretend someone is holding a sharp stick under your butt! lol)

This movement can also be performed with shoulders on a stability ball.