Why do we cry when we are sad?
When you see someone sniffling, holding a tissue with wet eyes you know they have allergies. When you see someone holding their eye wide open then blinking and making their eyes water you know that they have something in their eye. But have you ever wondered why we cry because of emotion? It seems so normal to us because we've always known crying means someone is sad but when you think about it why would would our eyes water if we are sad? Tears form to protect our eye but what is the benefit of crying when you are upset?
One of the main reasons of crying when you're sad is communication. Crying is one way of telling someone that you are sad or need help. Just think about babies. Babies can't talk or do anything for themselves so what do they do when they need their parents to do something for them? They cry. The parents don't have to know anything else except the fact that their child is crying to know something is wrong. Crying is also a way to communicate pain to someone without having to say anything. Crying even passes through language barriers. It's true in every culture that crying means pain or sadness.
There are also many emotional reasons we cry. According to scienceline(http://scienceline.org/2006/10/ask-driscoll-tears/ ) we cry because it usually makes us feel better. Crying can relieve a lot of tension and stress from the body. When someone says let it all out when you're crying they probably mean just the tears but you are also releasing all your stress and worries when you cry. The reason crying makes us feel better is emotional tears have more manganese and release different hormones than regular tears. This effect is thought to relieve tension and balance stress levels and even eliminate built up chemicals which makes us feel better.
There are also social reasons people shed tears. According to WebMD(http://www.webmd.com/balance/features/why-we-cry-the-truth-about-tearing... ) crying is a way to manipulate people. If you see someone crying even if you don't know them you still feel sorry for them. He/she could be crying for some ridiculous reason but you still can't help the feeling that you should comfort them or find a way to somehow make them happier. That's when the person will ask for something they want and you will most likely give in because you just want them to feel better. People will win support from those who see them cry because they've shown a vulnerable side of them. Another reason people cry is to bond with each other. Especially at events like funerals or weddings. Crying can bring everyone in the family closer together. If you're at a funeral crying and look around and see everyone else is too it lets you know you are not going through this pain alone.
Whether you are crying because you need to let go of some stress, you're sad, you want something or if you are just a baby, crying is the answer. You can communicate, manipulate or release tension with a good cry. Some people think it's better to put on a brave face but really crying is much easier and better for you. There's no need to act strong if you don't feel it. Crying just makes you a human being.