Nishi Shiki

Nishi Shiki (Nishi Health System) consists of health exercises purported to activate certain bodily functions. It was founded in 1927 by Katsuzō Nishi.
Because Katsuzō Nishi was also an aikido teacher at Aikikai Hombu Dojo, many aikidoka were introduced to the Nishi Health System, resulting in the incorporation of certain exercises, like the fish exercise (kingyo undō, 金魚運動), into aikido and the way aikidoka took care of their health.
The organisation around this system is called Nishikai, which helped Koichi Tohei in starting up aikido in Hawaii, which has members of Nishi-kai on all of its islands
The Nishi Health System is partly incorporated in Genkikai by Masatomi Ikeda.
Exercises.
Five self diagnostic methods.
These are five flexibility exercises that will provide diagnostics about internal organs, see reference for detailed description of the exercises. They will indicate whether the following organs are in good condition: