In Why We Run, biologist, award-winning nature writer, and ultramarathoner Bernd Heinrich explores a new perspective
on human evolution by examining the phenomenon of ultraendurance and makes surprising discoveries about the physical,
spiritual -- and primal -- drive to win. At once lyrical and scientific, Why We Run shows Heinrich's signature
blend of biology, anthropology, psychology, and philosophy, infused with his passion to discover how and why we
can achieve superhuman abilities.