A teenage male killed an older male with one punch in that soccer fight in California. I’ve been hesitant to bring this up for fear of being called a racist, but my martial arts instructor taught us to not try to hit Americans who are black in their heads. Their physiology is such that they can take head punches better than Americans who are white. Not because they’re stupid, their head is just better protected.
Better bone density. In part, because blacks need to be out in the sun a lot more than whites just to stay healthy.
Same here. We were taught to go for the knees.