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Gert Corfitzen Jürgensen

Hi, I’m Gert Corfitzen Jürgensen

Martial Arts Researcher
Author and Blogger

Jissen Karate

The Bubishi – Part 1

Bubishi - The classic manual of combat. The origin of the Bubishi. The Bubishi is a classical Chinese martial arts manual that holds significant importance in the realm of Okinawan ...

Ball- or heel turn in karate

Now and then, I get this question from a student: "Which part of the foot should we use as a pivoting point when we turn? Should we pivot on the ...

The history of the black belt

The history of martial arts belts, particularly the black belt and the introduction of colored belts, encompasses various stories and influences that have shaped the ranking system we know today ...