if someone punches or kicks you on the arm were veins are closer to surface can it bleed does it happen often? To make a good discussion start I will ask, what kind of damage is possible to inflict from a punch or kick? And is there any way to avoid or minimize the most serious damage? And what would be the ways to inflict the most i.e aim for solar plexus, neck, eyes, nose bone etc and heart, if CPR can affect heart why cant a push-punch? (edit) just found this now www.wbaboxing.com/box-medical-articles/some-common-injuries-in-boxing and https://siortho.com/blog/general-pediatric-orthopaedic-care/signs-of-blood-clot-after-bruise/
Couple of years ago a cricketer was killed by taking a cricket ball to the neck. It ruptured one of the arteries.
We must separate arteries from veins and keep all of those things combined away from Maasai. Then we must recognize that Mister MIyagi was right in that the best defense is no be there.