Fourteen weeks before the Mendes fight I tore 80 per cent of my ACL [anterior cruciate ligament]. That is the main ligament for stability. Every day in that training camp when I was working my way back, I was saying "real champions fight through any adversity". That is why I am a real champion and he is not. Look at my eye [he had seven stitches put in an old wound after an injury in training the night before we met]. Fighters fight on. Aldo got scared, he went running and I worry he will run again.

I don't give a f***. We're not fighting. I don't care what anyone thinks about me. All the stuff I have to do outside the fighting, the promotion, this, I don't give a f***. But when I am facing up for a fight, I know what they're thinking. I can read their minds. When I am going face to face with an opponent, nose to nose, I can smell the fear, and I'm feeling no fear at all.

A fight is mental, not just physical and psychological warfare is absolutely part of that.

Real champions fight through adversity.

I believe in believing. My coach John Kavanagh is a big atheist and he is always trying to persuade people to his way of thinking, and I think what a waste of energy. If people want to believe in this god, or that god, that's fine by me, believe away. But I think we can be our own gods. I believe in myself.

I studied every move, I became fascinated by thinking what I could have done differently. And I take that approach now as a professional. I am on it, all the time, never stop thinking, learning. You don't get to be world champion unless you do that.

The term "trash talk" is such an American thing. I still laugh at it.