Friday, January 29, 2010

Number of the Week

The percentage of modern endurance runners who land heel-first. Scientists in Harvard compared long-distance runners in Kenya and in the US and found that more then two thirds of runners who ran barefoot did so on the balls of their feet. Running on tiptoes may explain how our ancestors ran long distances without the benefit of hi-tech running shoes.
The full letter to Nature is available here.


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