"The exercise", Ghost said, "is very simple. There will be two parts, the first is you trying to hit me, just once, and the second is me trying to hit you, just once. Hitting does not mean 'try to hurt your opponent', it's just about defending and breaking through a defence." Ghost moved back and lifted up his arms. "Arms and legs are the only parts of the body that do not count. I'm ready, just attack me however you feel like."