Communication which includes body movements, such as gestures, facial expressions, eye movements, and postures is known as body language, it is a very personal way of expressing yourself without words. One's body language can carry a whole conversation without even saying a word. Sign language is an excellent example of this, another example would be when you talk with people nervously, you may continually shake your hands. If people pay attention to your hand, they may understand your body language.
One can spend their whole life communicating only with there body. Still one can be able to understand exactly how people are trying to express themselves. Speaking and body language goes hand to hand, without gestures when talking one cannot truly explain certain things to someone. Also there is no visual effect for the person listening. When there is sound as well as some kind of visual movement one is more interested in what someone is trying to say.
Through body language one can tell if a person is sad or happy, glad or mad. Body language conveys a lot of expression to are inner feelings and thoughts.
Body language can show many things about you and the way you think. It can also show the way a person reacts to what you try to convey to them. If the listener isn't responding one must try and change the topic without losing the listeners focus. One can only know this threw the listener's body language. Body language is essential to a good way of showing and conveying ones' ideas.
There are ways in which communication through the body takes place here are some of them described briefly:
Eye contact: This helps to regulate the flow of communication. Our interpersonal relationship is affected by how we use our eyes.