#1:. It increases life expectancy
Men who kiss their wives in the morning live five years longer than men who don’t.
#2:. It prevents tooth decay
Kissing increases the mouth’s production of saliva, which helps to clean the mouth and prevent tooth decay.
#3:. We swap more than just germs
We swap an average of 9ml of water, 0.7mg of protein, 0.18mg of organic compounds, 0.71mg of different fats and 0.45mg of sodium chloride when we lock lips.