This is a list of some commonYoga postures, or asanas. It would be impossible to delineate all recognized postures and their variations. In addition, other labels may be given to postures, depending on the school, the origin of the system within that school, or the yogi or guru who developed the system in question. A case in point would be Hanumanasana, the supported version of which is typically called "Runner's Stretch" by Kripalu practitioners. Also, a "Flat Back Forward Bend" in the Shivananda system is referred to as "Preparation for Chair" in both Ashtanga Vinyasa Yoga and Bikram Yoga.citation needed