Sometimes, during work-free periods, honey moon, valentines day and any other day we feel special or get in the mood, we KISS as if there is no tomorrow but how many of us know what we loose or exchange during this course, business or encounter?
First, when we kiss, we exchange 9 mg of water, 0.7 mg of protein, 0.18 mg of organic compounds, 0.71 mg of fats, and 0.45 mg of sodium chloride, along with 10 million to 1 billion bacteria according to one estimate. Now times that by 2.
Secondly, kisses use as little as two muscles, burning only 2 to 3 calories, thats for slow kisses, now when you kiss passionate, which is usually faster, you use 34 facial muscles along with 112 postural muscles and burn around 26 calories per minute, I know the last one will excite you, oya go burn some fat.
Meanwhile, according to Wikipedia, kissing "is the touch or pressing of one's lips against another person or an object" and for my biology interested readers, the scientific study of kissing is called “philematology” (philos in ancient Greek word, which means "earthly love").