Kids are starting at such a low base rate in terms of fitness that it's taking them years to catch up to where people like me started from. Every little bit is making it more difficult for kids to succeed on a world stage.

I tend to eat vegetables only when I'm with the kids and the rest of the time, I'm a bit slack. But, I am weight-conscious, so I concentrate on avoiding junk food.

Retiring was hard. I'd spent 15 years doing something I loved, but when you get older everything seems to go. When I started spending too long with the physio and the doctor, I knew it was time to call it a day. But I had no preparation for being retired and I didn't know what to do.

Sometimes you have to resist working on your strengths in favour of your weaknesses. The decathlon requires a wide range of skills.

For kids it's natural to be competitive.

There are lots of women tennis players, for instance, but because not many of them seem to have much personality, they're interchangeable. You don't have a feeling about them.

I am only about winning and getting better.