I received the best advice for running I ever heard: 'You're not going to win, so just relax. If it feels like work, you're running too hard.

Extreme heroism springs from something that no scientific theory can fully explain; it's an illogical impulse that flies in the face of biology, psychology, actuarial statistics, and basic common sense.

For nearly 2 million years, our ancestors survived and thrived and spread across the planet because they could run other mammals into heat exhaustion.

If you can run six miles on a summer day, then you, my friend, are a lethal weapon in the animal kingdom.

human urine is both nutrient-rich and an effective tooth whitener

We're constantly told that running will ruin our knees and outrage our hearts, but for nearly all of human existence, it was associated with freedom, vitality, and eternal youth.

If you don't have answers to your problems after a four-hour run, you ain't getting them.