I tried to give an explanation of how the mass of objects contributes to the outcome in the event of a collision. I have tried to explain it as a factor, I see that you either don't care, or were not interested and just want to provoke. Since I don't have an opinion about this, I was just trying (foolishly) to explain at a practical level the concept of classical mechanics, I will allow you to continue, unhindered by the constraint of physical reality.
yeah the kneck has a lot to do with how good you can take a punch short thick necks like lammotta and chuvalo were able to take the hardest punches you also got to have the right mentality when taking a punch
Chuvalo said he was the only one who took jaw excecises seriously, and chewed an incessant amount of gum.