Methods for refining the body, such as manipulating the sternum by Hino Akira.
DVD『日野晃の「衰えない力」を手に入れる!武道身体を極める「胸骨と肘の操作」編』
VOD:Master Akira HINO’ practicing method to learn how to operate intention and body as a fundermentally important basics for Iai.