To mark its 1,000th Christmas in Southwark, London's Borough Market organised a record-breaking 1,000 simultaneous kisses under 1,000 branches of mistletoe.
The market teamed up with physics experts at Royal Holloway, University of London to to use the kisses to power its Christmas lights display.
Physicist David Farmer from Royal Holloway University said: “We worked out that an average kiss on the cheek burns two calories per minute, which converts into approximately 150 watts– enough to power about three old light bulbs. Christmas LED lights only use about 7 watts so we found that the total amount of energy generated by 1,000 one-second kisses could theoretically power Borough’s Christmas display. Harnessing this energy is hard but you can still use a kiss to turn the lights on." The 'kissers' acted as a circuit and switched on the lights as they ‘connected’ by sharing a festive kiss. telegraph.co.uk #InstaPrintUK