What's that? You're not part a member of the Tarahumara? Or a marathon runner?
Ah, but you are a human--which means you cool by sweating (instead of panting), have comparatively short toes and springlike ligaments and tendons in your feet and legs, and a highly developed sense of balance--all things that most other mammals lack. A
study from the
Journal of Experimental Biology reports that all these factors put together suggests that humans were built to cover long distan

ces on foot.
And most humans can store about 20 miles' worth of glycogen (energy reserves) in their muscles. That means that with a power boosting snack, you, right now, could cover 20 miles...if you needed to. The biggest challenge is battling that muscle in between your ears.
But if having science on your side doesn't have you scurrying to race up your running shoes (or thin-soled sandals), how about a brisk walk instead? We know you don't need us to extol the benefits of walking, but the
results from a 20-year-long Nurses' Health Study provide a nice
reminder. Women who engaged in brisk walking or other vigorous
exercise for seven hours a week showed a 20% reduction in the
occurrence of breast cancer and a 50% reduction in Type II
diabetes.
Or just turn to another
New York Times piece, where you can read about and
watch Andy Newman, a reporter whose appearance can best be described as "rumpled." Newman took "running your own race" to heart. In the midst of marathon season this year, he also covered 26.2 miles...by walking 75.4 laps around his Brooklyn city block--much of it with his basset hound, Barnaby.
The details he notices in the life going on around him during his 15 hour adventure are nothing extraordinary, and yet, the people he meets and the local events he encounters give the whole experiment a sense of adventure, not to mention payoff of a much deserved pedicure.
Andy's inspiration for this personal challenge? He "felt like [he] was logging a lot of miles without really getting anywhere." It's a feeling we can all relate to, just as we can understand his revelation:
"Then I thought, I don't really have to go anywhere to get somewhere."