It might have started out as the cool athlete-to-athlete way of saying “nice play, man,” but now you might want to seal your next business deal with a fist bump.
The knuckle knocking – made even more famous by President Obama and noted germaphobes like game-show host Howie Mandel – is a much more hygienic way of exchanging pleasantries, according to researchers in Wales.
Because there isn’t as much skin-to-skin contact, fist bumps transfer significantly fewer bacteria than the more common handshakes.
ABC’s Scott Goldberg joined us for more information.
Follow us on Twitter: