ju-jitsu is not a sport, but a way of life. when you come to train in my ju-jitsu school you start an education, no obligation to do sports and learn tricks, tricks and tricks but a thorough training of your physical and mental resilience. you can train to a certain level or practice ju-jitsu as a life path, even into your old age. the coolen basic training system is a follow-up to the coolen basic attack system in which the responsible basis is laid for a development to the 1st kyu (brown belt). in the cbt-system, further necessary skills, drills, katas and combination are covered. if an added value for a part, a qr code is included, which, after scanning, shows the video of the kata or drill in question.