Well for a start you have provided a scenario where we are on concrete but you haven't given the circumstances. So, is the attacker armed, does he have accomplices, do I actually have to fight to get away or can I simply leave? Remember, this thread is about self defence.So when you start punching or kicking someone's face into the concrete, do you hold back, or do you go full force?
But I will ask you, in any competition fight like the recent Mayweather/Pacquiao bout, if you asked them do they hold back or go full force what do you think they might say? That is in a competitive environment. Don't you think you fight go full force if your life is on the line?
I have yet to see anywhere, and I have quite a library of very violent DVDs, where anyone is training people to stomp on anyone once the danger is past and I can't recall even seeing someone stomping more than once. Like many other areas where you have very little knowledge, self defence is not your strongpoint, otherwise you wouldn't be bringing competition BJJ and MMA into the discussion.As I stated earlier, in competition, in class, and in the street, you can tell when a person goes limp from a choke. When Ryan Hall choked out riff raff in front of a restaurant, he released him immediately, because he knew he had gone limp from the choke. Unlike most people being trained to stomp someone's face into the concrete until they're unconsciousness, Bjj and MMA exponents have actually choked out resisting opponents, and no the amount of force necessary.