Alpha was the best thing I ever did. It helped answer some huge questions and to find a simple empowering faith in my life.

Textbook survival tells you to stay put. Stop. Wait for rescue. Don't take any risks. But there'd been a whole host of survival shows like that and I didn't really want to do that.

I train five days a week hard - but it is short and sharp - 30 to 40 minutes of functional and pretty dynamic body-strength circuits, then I do a good yoga session on the sixth day, then I rest.

I've eaten sheep's eyes, the still hot meat from a zebra killed by a lion, and maggots which give you 70 calories to the ounce.

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

The truth is, I need 10 lifetimes to scratch the surface of the things I'd love to do.

I joined the Army at 19 as a soldier and spent about four and a half years with them. Then I broke my back in a freefall parachuting accident and spent a year in rehabilitation back in the U.K.