Instructions

Lie with your back on the floor with your legs bent and feet flat. Hold a dumbbell in each hand, with your arms raised above you and your palms facing each other. Bend your elbows until the dumbbells are close by your head, then "roll" them so that they are lying flat to the sides of your head. Reverse the motion by rolling the dumbbells back up and extending your elbows until your arms are above you. Repeat for the desired number of repetitions.