I'm going by what I personally train for. My coach tells me that he trains me the same way he would train any of his fighters with the slight difference that no one is going to call time out, no one is going to throw in the towel or any of that... so he pushes me in a different direction. I train that the fight "might go on forever". I am not saying what I do is superior to being a ring fighter... but as I said, I'm to old for that, and even if suddenly the surgeries that have been recommended to me for pain, misshapen sockets, etc were all healed and I was better, I'm still to old. I now train for the experience, the fun and with my Wife and son in mind if I ever have to protect them. That's what's most important to me... nothing else.