Why the cross-legged posture?- because place in the occurrence of consciousness is utilized by the pulmonary and cranial-sacral respirations to impact stretch and open feeling, and the ligaments that guide place into pitch, roll, and yaw and an ability to feel are most intimately those that attach the sacrum to the pelvis. The lotus on the cushion (or a tree root, back in the day) dictates that the cranial-sacral rhythm place consciousness so as to open feeling throughout the senses, all six. The opening of feeling allows the free occurrence of consciousness with respect to placement, waking up or falling asleep. The free occurrence of consciousness is the cessation (of volitive action) of perception and sensation. One thing after another.