leads an interesting life. However, the focus on animal physiology was found convoluted and little tied to other chapters until the end. Other reviewers found that many facts were "mushy" and are not integrated. Positive reviews from New York Times, Publishers Weekly, and positive aggregated reviews earned Why We Run: A Natural History best-seller status on Amazon.com, where it reached 19th place in popularity for science and wildlife books. References External links Bernd Heinrich Faculty Page Running books 2009 non-fiction books