Running with Sherman: How a Rescue Donkey Inspired a Rag-tag Gang of Runners to Enter the Craziest Race in America

by Christopher McDougall

And it couldn’t be simpler: first, you warm up with an easy two-mile run. Then you sprint for thirty seconds, and jog lightly to recover. Repeat, alternating sprints and jogs, until you’ve had enough. Don’t worry, you’ll know when;