The science of distance running

Photo credit: The American Chemical Society

Marathons are tough. Athletes push their bodies for miles, coping with cramps, dehydration and the worst fear of any runner: that extreme form of fatigue known as a “hit on the wall”. Why is distance running so difficult?

With the start of the New York City Marathon this Sunday, Reactions is stepping through the science of distance running: why muscles burn, how sweat cools the body, and the chemistry of running high.

Watch the video here:

The mathematical model helps marathon runners prepare for a strong goal. Provided by the American Chemical Society

Quote: Video: Marathon Chemistry: The Science of Distance Running (November 3, 2016) was accessed on April 8, 2021 from

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