I can't change everything by myself but I can be one of the people who are trying to change the situation.

I used to run to school, 10k every day. And this at altitude, perfect preparation, really.

When you talk about world record times, you have to understand that everything must be perfect the weather, the course, the temperature. It is not always enough to be in good shape.

You need three things to win: discipline, hard work and, before everything maybe, commitment. No one will make it without those three. Sport teaches you that.

My father thought sport was something fun - he didn't know it was a way to make money. Then I won a Mercedes at the world championships and I gave it to him. From the moment it arrived my father said: 'Good, you can support not just yourself but me too'.

I think if you come first with a new world record, that is the best.

Since I achieved something, running has exploded in my country.