What it is: When the skin on your feet becomes extremely dry, the constant pounding of running can cause it to crack — also known as a heel fissure. If the crack is deep enough, it can bleed and put you at risk for an infection.
How to prevent it: If your feet are dry, use a pumice stone in the shower to gently slough off dead skin cells, and then follow up with a thick moisturizer. When not running, avoid wearing shoes that expose your skin (like sandals), as this can dry the skin out even more.
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