John Kleijn (6º dan) é professor de judô há mais de 40 anos. Depois de lecionar em diversas associações, ele fundou a Escola de Judô Benoordenhout em 1994. Seu principal professor de judô foi Jaap Hoogendam. Além de professor de judô, ele trabalha como professor de matemática. Atualmente no Conservatório Real, mas anteriormente no Aloysius College, no Gymnasium Haganum, no HML e no instituto privado Vrijbergen.

Welcome to Cortez Boxing! Here you are guaranteed the best guidance and personal attention needed to help you reach your goals. Are you looking for certified trainers, a friendly atmosphere and good guidance? You're in the right place!

Tsuyoi is a self-defense gym located in Delft and Rijswijk! From young to old it doesn't matter, everyone is welcome. We try to keep it fun for every level. Our motto is not for nothing "everyone Budo"!

Tsuyoi is a self-defense gym located in Delft and Rijswijk! From young to old it doesn't matter, everyone is welcome. We try to keep it fun for every level. Our motto is not for nothing "everyone Budo"!