As you may well know, running is really tough on your feet and the muscles in your lower legs. These often neglected body parts do a lot of the work and absorb most of the shock of your run. Ignore them and you can end up with cramped, achy, throbbing, or even numb feet, shins, or calves from running, which not only sucks due to the pain, but can prevent you from getting in a good workout.
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