1 Every time you kiss, you will consume at least 12 calories in your body. Scientists point out that as long as you kiss for 20 seconds three times a day, you will lose weight. People who often kiss have an average life expectancy of five years longer than the average person, and have fewer chances of getting stomach diseases and blood diseases. Kissing is the most effective treatment for hiccups. When kissing, the labial muscles of 12 group and the lingual muscles of 17 group will be in a state of tension, which will promote blood circulation, help prevent wrinkles, make the skin smoother and have a cosmetic effect. In the past, when the beauty salon kissed passionately, the endorphin stimulated and secreted was equivalent to the effect of a painkiller. Saliva produced during kissing will automatically produce antibiotics, which have anesthetic effect and make people forget the sorrow. Kissing can stimulate the secretion of a lot of adrenaline and make people feel happy. If you kiss three times a day, you will live happily all day. Kissing allows both sides to exchange saliva. Once water, bacteria, natural salt and protein from original saliva are added to other people's saliva, some microorganisms will have different reactions, thus stimulating individual immune system to produce specific antibodies and enhancing immunity. Kissing can prevent the formation of corticosteroids and reduce the chances of suffering from high blood pressure, high cholesterol, muscle atrophy and insomnia. 9 A large amount of saliva secreted during kissing contains calcium and phosphorus, which can effectively prevent tooth decay, and the pH of saliva is neutral, which also helps to prevent dental diseases such as periodontitis.