Master Takemi Takayasu shows you the strengthening work as it is performed on the island of Okinawa. The strengthening work must be a part of the training of any budoka who looks for maximum efficiency. It helps to be able to block painlessly, and to increase the power of your strikes. But, be careful, the strengthening should not be practiced without caution, there is a risk of body injury. It is to be performed with intelligence and according to a precise and gradual method.