Any goal worth achieving involves an element of risk.

Struggling and suffering are the essence of a life worth living. If you're not pushing yourself beyond the comfort zone, if you're not demanding more from yourself - expanding and learning as you go - you're choosing a numb existence. You're denying yourself an extraordinary trip.

Pain is the body's way of ridding itself of weakness.

I love to run and I have some tips to keep it fresh and novel. I rarely use the same route twice. That keeps things new.

I have my whole office set-up at waist level; I don't sit at all during the day. Sitting, to me, is the devil.

When I ran across America, for 75 days I ate 10,000 calories a day. I still lost about five pounds.

Running is a simple, primitive act, and therein lays its power. For it is one of the few commonalities left between us as a human race.