Lovers swap saliva containing various substances e.g. fats, mineral salts, proteins while kissing. According to latest studies, the exchange of the above substances can give a boost to the production of antibodies which are made specifically to deal with the antigens associated with different diseases as they are encountered.
Eyes closed while kissing
As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
More Kiss Facts
An act of kissing puts 29 facial muscles in motion. In other words, kissing can be used as an effective exercise to prevent the development of wrinkles.
Men who kiss their wives in the morning live five years longer than those who don't.