WE are supposed to be a machine built to run. Our foot’s arch is a high-tensile web of 26 bones, 33 joints, 12 rubbery tendons and 18 muscles. It stretches and flexes like an earthquake-resistant suspension bridge. It is the greatest weight-bearing design ever invented.
Perhaps it was meant for humans to outrun animals they were hunting long before bows and arrows were invented. The hunters and gatherers of yesteryears have long gone, but we still inherit the physical construct of a strong and fast runner.
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