He has a black belt in seido karate. Seido karate is a type of Japanese karate. John works at the Royal Talbot Rehabilitation Centre in Melbourne. He has started karate classes for people in wheelchairs. He says anyone can join the classes. John changes the karate movements to suit each student's ability. With each punch and defence movement the students must shout 'kiai'. This is the Japanese word for shout. Shouting with each movement is a lovely way for a student to feel their power and force. And it feels good.