Bumping fists may be a more hygienic greeting than shaking hands, experiments at Aberystwyth University have revealed.
Using rubber gloves and a thick layer of E. coli, scientists at the university exchanged handshakes, high-fives and fist-bumps.
Their results revealed the transfer of potentially disease-causing bacteria is highest during a handshake.
This was reduced by more than half in the high-five, with germ transfer a whopping 90% lower when bumping fists.
"People rarely think about the health implications of shaking hands. If the general public could be encouraged to fist-bump, there is genuine potential to reduce the spread of infectious diseases."
More top news
Wales are ‘desperate’ to win Saturday’s Pool A decider against Australia to ensure they get the easier route through to the final.
Clear skies have allowed temperatures to tumble away out there. It's cold with patches of mist and fog developing in sheltered areas.
Wales are very, very close to qualifying for France but after decades of disappointment, here's how they can make it mathematically certain.