Stack your feet and place your elbow directly under your shoulder with your forearm resting on the mat. Lift your body of the ground and balance on one forearm and the side of your feet. Keep your entire body in a straight line by contracting your abs, lower back, and butt. Contract your abdominals and relax your shoulders. And breath. Optional: Reach your left hand straight out at a 90-degree angle to your torso (Taoist plank).