it probably isn't but neither is blocking a thai kick, people, as they get older usually don't take to learning new skills. makes no sense but it's the way it is, i mean it takes nothing to learn to block a thai kick but for whatever reason, we've seen fighters endure them. Recently, i was watching parts of that abomination, Ali-Inoki, now, I don't know who was telling the truth about what because both sides have their own take but if it was true that Ali showed up for a rehearsal and was told "this will be a real fight" I am sure glad his people forced the rules, the kicks were bad enough, who know's how much that took out of ali? Wouldda been more humiliating had he gotten thrown or had a limb broken, it's usually a dumb idea when fighters do those fights, either way, may mac was about as dumb. So even if it's easy to learn those things, most of the time, grown men don't want to learn, or they just can't, either way it's not good. I got into grappling at 29, physically, that was too old but it was mentally too, how do you change up from understanding that you fight until you can't to where it's ok to quit? that was tough and would have been tougher had a proceeded, I'd have had to "quit" 10,000 times before I got any good. Not for me, not for most boxers. like i say, thank god ali's people changed the rules, Ali, about as brave as any man in the history of the sport would have let that man kill him.