I exercise about 40 minutes a day, and I'll run one day and do circuit training the next day. I live in an area where there are brilliant hills and mountains, so I get a good hill run with my dog. At home, I'll do the circuit training with old weights, along with pull-ups in the trees and that sort of stuff.

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

I said no to the Born Survivor producer three times because I've never aspired to be a TV man.

Adventure should be 80 percent 'I think this is manageable,' but it's good to have that last 20 percent where you're right outside your comfort zone. Still safe, but outside your comfort zone.

For me, my training is a key part of my work as so often my life has depended on being able to move fast and haul myself up and out of something fast!

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.

I come from a line of self-motivated, determined folk - not grand, not high society, but no-nonsense, family-minded go-getters.