They say that a brisk walk a few times a week can do wonders for your body. Maybe you’ve tried to boost the cardio factor by turning your walks into runs. With some work, you’d be able to build up some serious endurance. But what if you ran for an entire day? In 2015, Camille Herron set a world record by running 50 miles in about 5 and a half hours. Well, humans were built to run from an evolutionary standpoint (think of our ancestors chasing after their food) but does it mean that excessive running is healthy? 

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