While the thought of posing with a shiny finisher’s medal might be enough to tempt you to enter the next race, have you ever thought about what actually happens to the body during a marathon? Read more to find out.

While the thought of posing with a shiny finisher’s medal might be enough to tempt you to enter the next race, have you ever thought about what actually happens to the body during a marathon? Read more to find out.

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