One killer exercise that's really great is pull-ups with your legs out level. That's my favourite. It's such functional core strength, and that's why I can climb up trees and down vines.

Exercise helps my back. If I don't exercise, that's when it starts to hurt. The pain is a good motivator to run and exercise.

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.

I do see a lot of the hard end of ecology, and my feeling is that we live on a super-exciting planet but a super-fragile one.

Above all, I feel a quiet pride that for the rest of my days I can look at myself in the mirror and know that once upon a time I was good enough. Good enough to call myself a member of the SAS. Some things don’t have a price tag.

The line between life or death is determined by what we are willing to do.

Life's full of lots of dream-stealers always telling you you need to do something more sensible. I think it doesn't matter what your dream is, just fight the dream-stealers and hold onto it.