Fist Bumps Are Cleaner Than Handshakes And High-Fives, Study Says

July 28, 2014 6:59 AM

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ST. PAUL, MN - JUNE 3: Democratic presidential candidate Sen. Barack Obama (D-IL) (R) and his wife Michelle Obama bump fists at an election night rally at the Xcel Energy Center June 3, 2008 in St. Paul, Minnesota. Obama clinched the Democratic presidential nomination following today's primaries in South Dakota and Montana, although his rival Sen. Hillary Clinton (D-NY) has not yet conceded the race. (Photo by Scott Olson/Getty Images)

President Barack Obama acknowledges the crowd as he exchanges fist bumps with the audience after speaking at Hyde Park Academy, Thursday, Feb. 14, 2013, in Chicago. (AP Photo/M. Spencer Green)

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