We all get by better with a little help from our tunes. iStockphoto hide caption

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Blaze Bioscience is commercially developing the "paint," which glows when exposed to near-infrared light. Courtesy of Blaze Bioscience hide caption

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Janet Wertheimer does a back hyperextension exercise at Boston Sports Club in Wellesley, Mass. Regular exercise has helped control her chronic back pain. Ellen Webber for NPR hide caption

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Knee pain is common, but surgery isn't necessarily the answer, researchers say. Inna Jacquemin/iStockphoto hide caption

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We know you'd rather skip the fasting and bowel prep. But that's the way we've always done it. iStockphoto.com hide caption

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Ryan Braun of the Milwaukee Brewers has been suspended for the rest of the 2013 season after violating Major League Baseball's drug policy. Mike McGinnis/Getty Images hide caption

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