COOLEN BASIC TRAINING SYSTEMJu 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