Fighting is about knowledge, knowledge is a very important part of it.

Respect is the most important thing. Be respectful toward others and have respect for yourself.

If you want to be a proud person, then you want to avenge your loss. For me it was [Josean] Serra and [Joe] Hughes, and for Michael Bisping, Henderson is one of his losses - one of his most painful losses. So I understand why he wants to avenge it. As an athlete I understand.

For me there is no reason why to go up in weight class, because when you go up in weight class you have to fight bigger guys - then you have to train against bigger guys. The guys are not better, they're heavier, but it means you have more chance to get hurt.

I don't want things that I regret in life, and things that I have not done - and I don't want to at 80 years wake up, and tell myself: 'Oh I was on top of my shape and skills and I didn't do it.'

People have mistaken my break, I took a break from competition, it was because of mental problems, and because I was not agreeing with Performance Enhancing Drugs. I put the things on pause for a while, but I didn't retire.

Respect your opponent, just make them respect you more.