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.

As long as my heart's still in it, I'll keep going. If the passion's there, why stop?

How to run an ultramarathon ? Puff out your chest, put one foot in front of the other, and don't stop till you cross the finish line.

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.

The human body is capable of amazing physical deeds. If we could just free ourselves from our perceived limitations and tap into our internal fire, the possibilities are endless.

Unless you're not pushing yourself, you're not living to the fullest. You can't be afraid to fail, but unless you fail, you haven't pushed hard enough."

The human body has limitations. The human spirit is boundless.