I would like to express my thanks to Master Roger Koo for developing an extremely practical and effective system of training that goes beyond the realm of any level of fitness that "traditional martial arts" can teach!

In a very short period of time (2 months) I have enormously improved in power and stamina in Koo Self Defense to a level that I have never achieved after 1.5 years in a traditional martial arts studio.

Every class that I participate is a new challenge! I highly recommend Koo Self Defense to anyone that is looking for a workout with a challenge. Thanks again Master Koo!

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