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
There is likely to be a good deal of cloud around today, thickest in the southeast, where outbreaks of rain are possible at times.
A dry night with clear spells for most, especially towards the north where it will become rather chilly with some mist patches possible.
Wales head coach Warren Gatland says some players suffered a few bumps and bruises during their clash against Ireland.