However, for several years, I did train Kyokushin full contact Karate. My sensei insisted that when fighting, we should look at the opponents solar plexus as when fighting every movement of the opponent comes from an limb (Either arm or leg) attached and controlled by the torso. By focusing on the solar plexus, you have “advanced warning” of what the opponent is going to do, but the eyes can lie. Using our eyes to lie to the opponent was another thing our sensei told us how to do and tiny seemingly unimportant things can make quite a difference when fighting.