Locking lips for a kiss is as good for your teeth as brushing, a dentist claims, and should be done for four minutes a day.
The Sun reports a good smooch a day keeps the bacteria and acids away that cause decay, thanks to a boost in saliva production, a dentist said.
Chief of Impress orthodontics Dr Khaled Kasem said on top of brushing and flossing, people should kiss for four minutes a day.
"The main benefit of kissing is that it produces more saliva in your mouth."
Dr Kasem told The Sun saliva neutralises the acids that sit on your teeth which reduces the risk of getting tooth decay.
"So keep kissing if you want nice breath and healthy teeth."
He added a daily smooch reduces infection risk because bacteria from your partner's saliva boosts your immune system.
Other health benefits include stress relief, thanks to love hormones.
But of course, kissing comes with risk. The person you kiss might swap bad bacteria and boost the risk of decay if they already have dental problems.
"The only negative impact of kissing is when people are sick, have a cold sore or already have bad oral hygiene. Otherwise, kiss away - but keep brushing and flossing."