The training must be done in a serious manner, because its techniques are derived from severe life-or-death situations, where one must win the fight in order to survive. This is why the karate practitioners are required to have a serious mind set. Only in such a condition can one possibly achieve extreme levels of mind and body far beyond ordinary levels. This is apparent in competitions. Because only one definitive technique can conclude a match, competitors are driven to learn the importance of serious attitude.