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Gert Corfitzen Jürgensen

Hi, I’m Gert Corfitzen Jürgensen

Martial Arts Researcher
Author and Blogger

Jissen Karate

Strength training – Yes or No!

Are you doing strength training alongside your Karate? If not, then maybe you should consider it. Strength training is essential for your development within Karate. The purpose of strength training ...

Ryukyuan Caste System

Hierarchy in the Ryukyu Kingdom - A Complex Caste System. The Ryukyu Kingdom, a historical gem situated in the captivating landscapes of what is now Okinawa, Japan, was characterized by ...

Shima – Okinawan Sumo

Wrestling has been a popular form of combat sport throughout history, with various styles and techniques developed by different cultures around the world. One such intriguing style is Shima, also ...