I've been trying to find some science about repeated impacts to the face and head, and the long term implications of such.
There's a fair bit about boxing, and American football comes up a lot too. I get that. There's two examples of sports where very substantial wallops to the head are fairly routine.
But what about less forceful blows? What if two training partners, wearing lightly padded sparring gloves, knock each other about at about 50% force, just to enable each other to overcome/control the flinch response, and to practice not being stunned by an impact? I can't find anything science backed on that kind of regular head impact.
Common sense dictates that anything that rattles the brain or causes bruising or bleeding to anywhere about the head or face has the potential to lead to problems. But common sense surely also dictates that all the martial arts training in the world counts for precisely nothing if we become paralysed with shock, pain and fear as soon as the first impact arrives.
Does anyone have any solid science backed knowledge on this one?