What is the key to uppercut in boxing?

I think as far as the world is concerned, no matter boxing, Taekwondo, Muay Thai, Sanda, China Wushu, etc. You can't do without fist, foot, palm, head, waist and legs (excluding the competition rules of some countries), so no matter which part of your body you attack, you should be steady, accurate, malicious and fast. But by the way, we learn martial arts not to fight, but to keep fit. to be continued ...

You ask the secret of hook: you should twist your waist to drive your arm up when you hook. Of course, your rising arm should attack at the closest distance to the target you hit. This will not only increase your punching speed, but also increase your punching strength.