Lie on the ground on your left side with your knees stacked on top of each other. If you need, have someone hold your legs down.
Bend your elbows and place your hands behind your ears.
Exhale and pull your body up toward your lower body, ensuring that your legs stay bent with your knees together and your upper body stays stable. James said the goal is to have your abs contract like an accordion.
Inhale as you lower back down. Repeat 20 times, then switch sides.