A year after he graduated, someone asked him, "If you're so smart, how come you aren't rich?"

He decided to get into shape for a long-distance running contest that offered a big cash prize.

He met some people interested in physical fitness and started training with them. One member of the group was persistently putting down Darwin and boasting about being not only in better shape than Darwin, but having achieved the highest possible fitness level. During the running contest, that member of the group suffered a heart attack and died.

The death upset Darwin, so Darwin didn't finish that particular race, but he looked down at the corpse of the dead runner and asked, "If you're so fit, why didn't you survive?"