Birds are masters of the air. Masters in the sense of knowledge. Really in order to fly one must both know how to use the air to one’s advantage and how to yield to the air. Meeting the air. Being in the flow (as Kali Ray would say). Being in the flow is being in the fly. The two air aspects of human life are the interaction with air from without (breathing) and the metaphorical inner air (the mind). Mastering the breath and controlling the winds of the mind bring flight. Through meditation and pranayama one can fly. And…hatha yoga to have a firm ground to push off of.