You lose or you win the fight - and anything in life - in your mind. I can look at how the person walks, how he speaks, his expressions. It's a wisdom. Eyes are the mirror of the soul. So you can read a lot.

I learned in my Ph.D. the discipline I needed to be successful. Most boxers are not that disciplined. They have talent, but the self-organization - the ability to schedule yourself and your priorities - is lacking. My studies were about the control of training on both the psychological and the physical side.

The first thing I learned in boxing is to not get hit. That's the art of boxing. Execute your opponent without getting hit. In sports school we were putting our hands behind our backs and having to defend ourselves with our shoulders, by rolling, by moving round the ring, moving out feet.

I run, but boxing conditioning is different, so you have to get used to running in the ring. Boxing movements are very different. Swimming is one of the best because every single muscle is working. I swim a lot. I train very hard at things that mimic boxing. I have to do mostly sport-specific training, such as lots of sparring.

I train six days a week for four to five hours a day. I like to keep the same schedule when I'm in camp for every fight.

Mental strength is really important because you either win or lose in your mind.

I have decided to make a personal message to David Haye. I want him to fight me, to be a man. I wish there will be enough excitement, pressure and courage for David Haye to fight me.