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4 Good Reasons (from a Doctor!) to Buy New Sneakers

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It might seem like a ploy to get you to buy new kicks more often, but the materials in athletic shoes actually do have a shelf life—they break down with use and over time. “The soft, bouncy materials that make up a shoe are designed to provide cushioning and support,” says Jordan D. Metzl, M.D., a sports medicine physician and author of...