All boxers know that when they enter the ring, they have one foot in the grave. It is a brutal sport. That is why they have licenses, not just because their hands are lethal weapons, but also to make sure they are fit to enter the ring. I do not think Munoz should blame himself for the death of his opponent. It could have easily happened to him also. Conditioning is very important in this sport since a knockout could also mean your death. Without proper conditioning, the body cannot endure all that blows to the body and the head.