When I'm filming, survival requires movement. You need your energy, and you've got to eat the bad stuff, and survival food is rarely pretty, but you kind of do it. I get in that zone, and I eat the nasty stuff, but I'm not like that when I'm back home.

Nobody wants to end up super rich and famous - but divorced. I'm always clear on that and try to stay on the right side of the line.

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

To get ready to climb Everest, I did a lot of hill running with a daypack on and a lot of underwater swimming. I would swim a couple of lengths underwater and then a couple above. It gets your body going with limited oxygen.

That feeling when you're so cold you'd give anything to be warm - I've had it before, literally huddled around a candle flame on an ice sheet.

All my life the only thing I've been good at has been climbing and throwing myself off big things.

Is your ego small enough, and your backbone strong enough, to raise others up high on your shoulders?