Researchers have found that when bottles of sanitizer and wipes were kept around schools and students were cued to use them, they ended up missing significantly fewer days due to stomach bugs. / hide caption

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If you're overweight, the best way to spend your limited time exercising is aerobic activity, a researcher says. Rhodes ludovic/ hide caption

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Pharmacist Kristy Hennessee administers a vaccination against whooping cough at a Walgreen's pharmacy in Pasadena, Calif. last year. Robyn Beck/AFP/Getty Images hide caption

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Tennessee women's basketball coach Pat Summitt sits with her dog at her home in Knoxville, Tenn. Summitt plans to coach "as long as the good Lord is willing" despite recently being diagnosed with early onset dementia. Debby Jennings/AP/University of Tennessee hide caption

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The standard technique for measuring blood pressure may not be good enough. / hide caption

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