i think it was posted in the MMA section,a chin is often as good a a fighter defence... it owuld take it further and add fitness...

its not so much the chin that counts in flashknock downs, more of the condition and terms of the kncok down, a great condition fighter can take great hits, whislt a fighter taking an unxpected hit will god down..

Take they knockdown of toney v RJJ... toney was ebign cocky he took a hit whislt his body was toaly relaxed... when a fighter is able to see a punch coing their upper body is tense, thier neck and soulder are tense waiting to absorb the punch there for the chin isn't the main factor...

peopletalk about toney having a grwta chin, whislt he does boast a great record, i think thatsmainky down to his skill... he hardly got fucking hit on it lol or always had the skill tostop a guy landing the ounch that took him down