I've still got a small fitness and conditioning business where I travel round the world doing stuff for individuals and corporations, mainly fitness training.

I am only about winning and getting better.

I am an education ambassador, mainly working with schools.

I'm obsessive. I want to know the answer to how good I am. Most people aren't.

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'm competitive - that's what defines me - and I love it.

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.