1. The lips and tongue hundreds of times more sensitive than fingertips. Despite the fact that the lips half the thickness, of the nerve endings in this area much more thanks to the trigeminal nerve-the main sensitive nerve of the face and oral cavity. On the tongue are sensory and gustatory receptors, which are faster than any other respond to touch.

2. While you're kissing decreases levels of cortisol, a stress hormone. And the effect this long-term, that is, the more kisses, the longer you'll be calm and cheerful.

3. For pleasure thank estrogen and testosterone — hormones that actively produces your body when you get pleasure from.

4. When you kiss, your breath quickens in three times, it enriches the blood with oxygen, has a beneficial effect on the heart. In addition, kissing reduces the level of cholesterol in the blood.

5. While kissing involved about 30 facial muscles. Such "gymnastics" improves the complexion, adds glow to the cheeks and prevents the appearance of wrinkles.

6. Think got those little butterflies in your stomach? A nagging feeling in the abdomen, say researchers, girls have more guys, although they are not deprived of that pleasure. After all, before kissing the brain actively produces endorphins, which lead the person into a state of euphoria. By the way, endorphins help relieve depression.