Virasana (Sanskrit: वीरासन; IAST: vīrāsana) or Hero Pose[1] is a kneeling asana in modern yoga as exercise.[6] The yoga scholar Mark Singleton notes that a pose similar to Supta Virasana was described in Niels Bukh's early 20th century Danish text Primitive Gymnastics.Swami Kuvalayananda incorporated Supta Virasana into his system of exercises in the 1920s, from where it was taken up by the influential yoga teacher Tirumalai Krishnamacharya.[7] Virasana is a basic kneeling asana and the starting position for several forward and backwards bends and certain twists.[14] Light on Yoga shows Yogadandasana as a variant of Virasana, one bent leg being rotated inwards until the foot supports the armpit on the same side.