Looks like the Obamas (and just about every baseball player/celebrity/cool kid) are on to something. According to a new study published in the American Journal of Infection Control, a fist bump transmits significantly less bacteria than both a handshake and a high-five. To be exact, nearly twice as many bacteria were transferred during a handshake in comparison to the high-five, and significantly fewer bacteria were transferred during a fist bump than a high-five. In all three greetings, the longer you hold the grip, and the stronger your grasp, the more bacteria you’ll transmit. This all sounds pretty logical to us. The question is: How do we say “Hello” now?
READ MORE: Fist Bumps Healthier Than Handshakes, Says Science