Kneel down on the floor with a stability ball in front of you. Place your forearms on the ball, tuck your toes under and extend your legs straight so that you are supporting your body with just your feet and elbows in a plank position. Slowly rotate hands and elbows clockwise, then counter clockwise, making circles with the ball. Make it challenging by making the circles bigger!
Join the millions of exercisers who use Workout Trainer to get fit, fast! Go PRO+ today to unlock the best mobile workout experience, plus all custom training programs!