Junan Taiso - old video with Masaaki Hatsumi

Stretching muscles and maintaining physical condition have always played an important role in martial arts training.
In different ryu-ha, the techniques are known through different names: Junan Taiso, Junan Undo, Ryu Tai Undo, Ki Undo, Junbi Taiso and Aiki Taiso.
In this old video, you can see the stretching techniques used by soke Masaaki Hatsumi.