A video I listened is about "body language". This video shows how body language affects on humans. Actually, people really concern about others' body language because it shows our feelings as well as our thinking. Moreover, people has power or don't have power, body language will show all of them on their actions, even you don't feel confident. Therefore, it can influence on your success a lot. In addition, body language can help people communicate to each other even though they don't have to talk. Most importantly, humans can know others' behaviors, and they can conclude that person is good or not by keeping an eye on his or her body language.
In my opinion, body language is very important to humans because it help people attract others. For instance, if we use body language on presentation, everybody will pay attention more than we don't. Moreover, it shows our thinking and feeling because when we feel happy, obviously, we are going to smile, or when we are confident, we will show a strong actions before other people. Therefore, body language is really vital as well as necessary for people. According to Amy Cuddy, "your body shapes you are". That is absolutely true.