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Gert Corfitzen Jürgensen

Hi, I’m Gert Corfitzen Jürgensen

Martial Arts Researcher
Author and Blogger

Jissen Karate

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 ...

The invisible bond – Giri

The invisible bond - The way of life! In Japan, they have a concept called Giri (duty, sense of duty, honor, decency, courtesy) Giri is an invisible thread, a bond ...

To search for the old!

Gichin Funakoshi once said: "To search for the old is to understand the new. The old, the new, this is a matter of time. In all things, man must have a ...