Very useful. Personally, it's not how hard you practice, but how keen your senses are, how well your body is coordinated, and most importantly, how handsome you are. You can end the battle in an instant, maybe less than a second, and it is difficult to pursue criminal responsibility after hitting your opponent. At most, it is perforation of tympanic membrane and minor injury. Some will be fine in two days, and judicial expertise will not find your fault. If you practice wrestling jujitsu, muay Thai and mma, it is easy to be killed and injured by mistake, and when people identify you, they conspire with lawyers to falsely accuse you of 180 thousand, then you will have to go to jail. The best example is two male students in Australia. Because a green tea bitch, rich second generation male, 1.9 meters, is estimated to practice Muay Thai for more than 890 kilograms. At first glance, I know that he is a strength type and likes fitness. The other one, Xiao Bai, is only 1.8 meters, has no combat experience and can't even practice hugging. They fought. It's simple. He hit his face and skull with a hard whip, and his knees were stiff. He hit the back of his head when he fell to the ground. When he woke up, he called an ambulance. The rescue in the hospital was ineffective and they died. The two men tried to escape and were arrested and imprisoned. The man's mother spent four or five million Australian dollars to get her son. Despite the bad domestic judgment, they were shot within two years. No matter how they operated, they had to be locked up for 15 or 16 years, and they had to pay one or two hundred dollars more to save their lives. Why do you know so much? I practice boxing abroad, and everyone really fights with a hammer. The training methods of foreigners are relatively rough, that is, actual combat, then iron-striking, and finally lectures. Everyone has a big temper, and it is normal to start without thinking. I study boxing, but my coach is the most famous muay Thai player. How terrible is the injury to his arm and leg on his face, like a hammer.