My TWD/Kyokushin/Judo/jiu jitsu School (Do San Dojang) is a 10+ We don't use any pads at all starting from White Belt. We toughen up the ribs with 25% power punches. All other Body conditioning is done with the bamboo sword at 50% power. Done just like it's done in Korea! expect the un expected then....WHAAAAAP!!!