From Down Dog, step your right foot forward between your hands, stand up, and turn your right foot to the left so both feet are parallel with three to four feet between your toes. Turn the heels out slightly wider than the toes.
Standing tall, interlace your hands behind you, pressing the heels of your palms together in a double fist. If this hurts your lower back, just rest your hands on your hips.
Take a deep breath in, and slowly fold forward at the waist, lowering your hands toward the floor. Don't worry how far you can bend; just focus on keeping the legs straight to keep the stretch in the backs of the legs.