International Kissing Day 世界接吻日 - 2012 07 06 International Kissing Day was initiated by British and was admitted by UN in 1991. Why do people kiss? Firstly, it is a cultural tradition. Almost in the whole world people getting into a romantic situation feel an unperceived necessity to kiss. There is such a feeling the representatives of the opposite sex are programmed to kiss and are waiting for the moment. When you understand it, you will get both more kisses and more satisfaction from them. This program works day by day. People see actors kissing on TV screens, in movies and advertisements, they are told their friends are kissing someone and they see people kissing in the streets. As a result, in particular situations a kiss is perceived as an essential part. That's why in any romantic situation the unconscious stereotype comes into force, and people feel almost an irresistible desire to kiss, no matter if they want to do it or not. Some fascinating facts about kissing: The earliest literary evidence for kissing comes from India’s Vedic Sanskrit texts, dating back 3,500 years. A passionate kiss can make our pupils dilate – probably one reason so many of us close our eyes. Two-thirds of us tilt our heads to the right when we kiss, and it’s not correlated with right-handedness. A man is far more likely to prefer sloppy tongue kisses than a woman. The added testosterone from his saliva may serve to enhance her libido over time. We are not the only species to engage in kissing-like behaviors. Great apes press their lips together to express excitement, affection, or reconciliation. In studies, people remember more of the details about a first kiss than first sexual experience. Kissing works like a drug in our bodies, and can promote dopamine – the same neurotransmitter stimulated from addictive drugs like cocaine. Our lips are packed with sensitive nerve endings so even a slight brush can send a cascade of pleasurable signals to the brain encouraging us to continue under the right circumstances. The advantage of kissing: 1. Kissing boosts immunity. 接吻能够增强免疫力。 2. Kissing helps you pick the best mate. 接吻可以帮助你选择最佳的伴侣。 3. Kissing burns calories! 接吻能够燃烧卡路里！ 4. Kissing keeps facial muscles strong. 接吻能够保持面部肌肉强劲。