Of course this depends on where you are punched.
Does it hurt if you punch someone in the face. You have to intercept them by striking first before they get too close to hurt you. I was at a bar with a couple of girlfriends. A punch square to the nose is disorienting thanks to the excruciating pain of the broken cartilage and all the blood that goes with it.
Of course it all depends on what kind of punch you throw and whether you really mean it so to speak. Oh yes it hurts quite a bit. I imagine the worst pain is from a broken nose.
I dont believe in the idea of blocking. If you do youre extremely likely to get hit with a counterpunch in a fight. Realize that hitting a persons stationary face with your fist is exactly the same as that persons hitting your stationary fist with his face.
So ask him how hard you hit compared to the other people in the gym. As the head is basically the hardest part of the human body a connecting blow actually means you stand a better chance of breaking a hand yours than breaking a face your opponents. Is an assault and battery.
As tempting as it may be to punch your opponent in the face Horan says thats the wrong move. The better your mechanics are the bigger the chances of injuring yourself. Blocking is a passive movement that requires too much to make it work.
It was not even a forethought when I found myself socking a guy in the nose and breaking it. Aside from all the your fists are as fragile as toothpicks stuff we just finished talking about remember that the human skull isnt just hard its also sharp. 4 Clench your fist and follow through.