Americans are cool, if you show just a chink of vulnerability, they respond so much. They'll pat you on the arm and say, 'Hey kid, you're all right'. Brits will respond but they are much more cynical.

I've had so many injuries in my life that it's ridiculous.

As for my diet, I try to eat lean, clean and healthy - nothing too surprising. And I avoid too much meat or dairy because they slow you down.

I think viewers quite like it when I'm suffering or eating or drinking something horrible or really up against it in some quicksand or whatever.

Some of the greatest survivors have been women. Look at the courage so many women have shown after surviving earthquakes in the rubble for days on end.

I always wanted to be Robin Hood or John the Baptist when I was growing up.

The special forces gave me the self-confidence to do some extraordinary things in my life. Climbing Everest then cemented my belief in myself.