In the Pulling Straps and T, Romana Kryzanowska used to say “Top of the shoulders in line with the edge of the box. Zip the legs, squeeze the heels together and reach the feet down and back.” This is very effective at pulling the belly up off of the box and lengthening the lower back. You can then focus on extending the thoracic spine using the scapular muscles. p. 114 “Teaching the Universal Reformer Repertoire.”