Humans aren't built to sit all day. Nor are we built for the kinds of repetitive, small movements that so much of today's specialized work demands. Our bodies crave big, varied movements that originate at the core of our body.

For me, challenging myself with this type of endeavor [ultramarathons] brings the best out in me because even at the darkest, deepest moments when I feel like I can't go on, when I feel like there's no chance I could break the record or much less finish the trail, somehow I find that strength inside of me.

Only the most saintly and delusional among us welcomes all pain as challenge, perceives all loss as harsh blessing.

We can live as we were meant to live - simply, joyously, of and on the earth. We can live with all our effort and with pure happiness.

But the longer and further I ran, the more I realized that what I was often chasing was a state of mind- a place where worries that seemed monumental melted away, where the beauty and timelessness of the universe, of the present moment, came into sharp focus.

We all lose sometimes. We fail to get what we want. Friends and loved ones leave. We make a decision we regret. We try our hardest and come up short. It's not the losing that defines us. It's how we lose. It's what we do afterward.

We move forward, but we must stay in the present.