"Body language varies from person to person Although there are some common gestures, body language differs from one person to another. Every body has its own language, which is what is called ""the standard"" and it is simply the person's natural state that is far from any kind of pressure or fear, anxiety, Sadness and all the factors that may push him to hide a certain fact or feelings, and the process of analyzing body language is the process of comparison between the rest of the person’s behaviors and this standard that we draw through our knowledge of the person. His body with the gestures we would expect him to be in that position given gender and external factors into account. And knowing if it matches his words or if there is an interesting secret waiting for you to discover."