A clear understanding of anatomy and physiology is an important aspect of yoga. That is the first realization of yourself; first understanding of yourself. I am not saying you should all do medicine, but this is biology – you need not go into detail, a general understanding of this is enough. You will understand why yoga prescribes certain respiratory systems, certain levels of breathing, certain rhythms, and certain postures. If your consciousness was not linked to the physical organism, what is the use of all this?