Rest your hands on the back of your pelvis, bases of the palms on the tops of the buttocks, fingers pointing down. Use your hands to spread the back pelvis and lengthen it down through your tail bone. Then lightly firm the tail forward, toward the pubis. Make sure though that your front groins don’t “puff” forward. To prevent this, press your front thighs back, countering the forward action of your tail. Inhale and lift your heart by pressing the shoulder blades against your back ribs.