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As the saying goes, pleasure, anger, sorrow and joy is the emotions of ordinary people. Even if he is a strong-willed person, he would inevitably burst into tears. Crying is the simple and innate behavior, without having to learn, everybody can do it, like the heart beat from the same instinct, and as natural as sigh and sneezing. So, why do people cry? What are the effects of tears on the body? Crying is a unique skill of humans, animals will not cry. The cry of mankind is special, not due to the sound of crying, but because of emotional tears. The animals also sob, groan and howl, but not shed tears with emotion; even with the closest genetic relatives of primates is also so. Apes and other animals also have tears tube, but its function is to clean the eye, and infiltrate the eye. Like crocodile tears, it is only in order to flush out excess salt, and it is nothing to do with compassion, sadness, even hypocritical feelings, this is simply not to cry. Moreover, tears can be divided into three kinds. The first one is generated in the blink of eye, which is so-called basis of tears. In a person’s life, the eye is about to blink 250 million times. The main component of such tears is the salt and sterilization substances. Without it, our eye will feel something or dust exists, even as our eyes dry leading to blindness. Scientists found that when the formation of the fetal eyes, the tears began to exist. Besides, many animals secrete this liquid. The second tear is a protective reaction, through this protection, it can prevent foreign matter and dirt from entering the eye, such as dust, sand, dirty water, smoke and insects. Only reptiles and human have this tears reaction. The first two tears are easy to explain, because they have a clear biological role. But the last one, that is, the tears when people cry, but do not play any biological role, only a psychological performance. Then why should human is different to inhibit the outflow of such tears, when they feel grief, intimidation, or feel happy, or out of sympathy? Tears can take away the troubles, the reasons for the human cry, Darwin, the founder of the theory of evolution, had thought that the cry is an evolutionary relic, and it has nothing to do with the competition for survival in the evolutionary process. For the human body, tears itself is by-product that does not make sense. Since the online game is so popular now, Tory decided to have a try. After a period of time, Tory found it quite simple for he could get Guild Wars 2 Gold, sell Guild Wars 2 Gold and Guild Wars 2 Gold sale so easily.
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