In the marathon anything can happen.

I don't like going away from my children.

Never set limits, go after your dreams, don't be afraid to push the boundaries. And laugh a lot - it's good for you!

To represent your country at a home Olympics is something special and I'm over the moon to be selected for Team GB. I was pleased to get the qualifying time in Berlin earlier this year and my sole focus is getting in the right shape for London.

An Olympic medal won't define my whole life, although it might look like it to onlookers. When I look back, I should have been able to get an Olympic medal.

I felt totally myself, nothing like the emptiness and horrible feeling I had then [pulling out the Olympics] - no dizziness.