Stand with right heel at arch of left foot, a 3 - pound dumbbell in each hand, elbows bent at sides and palms facing each other (A). (health.com)
Press the outer right heel into the floor as you lengthen your tailbone and get deeper into the posture. (yogicwayoflife.com)
Single - leg / Medicine Ball Bridge: Lie faceup with knees bent, left leg straight up and right heel on top of medicine ball, arms at sides with palms down (A). (health.com)