The whole reason I moved to the U.S. to be coached by Alberto Salazar is to be able to improve 1 or 2 per cent. I was sick of coming sixth in the world, seventh in the world, and get close to a medal, but not quite there, half-a-second.

Growing up, I would never have thought that I'd be a double Olympic champion, with a lovely home and beautiful kids.

I don't know much about politics, but you have to look at it with the bigger picture and think what's best for us now, what's best for us in 10 years' time, what's best for our kids' kids' future - and I don't know.

My first Olympics memory was watching Haile Gebrselassie in Sydney 2000. His sprint finish to defend his title really moved me.

Ultimately, very few people parent their kids in ways that strike anybody else as reasoned, appropriate or sane.

I'll go on '60 Minutes,' and whereas other parents would be like, 'You did a great job. I'm so proud of you,' my mother will be like, 'Your hair - it was not nice.'

I began making music at the age of four. According to my mother, once I just sat down at the piano and played back a tune by ear. My parents were watching and said to each other, 'Maybe we should give him music lessons.'

I have a great relationship with everyone in my family, but I'm closer to my brothers than anyone else because they give me a lot of guidance.