Every morning in Africa, a gazelle wakes up. It knows that it must outrun the fastest lion, or it will be killed. Every morning, a lion wakes up. It knows that it must run faster than the slowest gazelle, or it will starve.
It doesn't matter whether you're a lion or a gazelle -- when the sun comes up, you'd better start running.
Christopher McDougall, Author
Born to Run: A Hidden Tribe, Superathletes, and the Greatest Race the World Has Never Seen