Iyengar's method, first taught by B K S Iyengar, a form of hatha yoga, is based on giving primacy to the physical alignment of the body in the poses. In this school, it is taught that there is a correct way to do each pose, and that every student will one day be able to attain perfect poses through consistent practice. Once this balance is created in the body, it will be reflected in the mind. One of Iyengar's major innovations is in the use of props. Today it is quite common to see blankets, blocks, straps, chairs, and bolsters being used in yoga studios. The use of these props is comparatively new in the history of yoga and comes directly from Iyengar. The purpose of the props is to assist the student in attaining ideal alignment, even if the body is not yet open enough.