Before starting on topics, one should understand the basics first. So what is body language? According to know-it-all Wikipedia, Body language is a kind of nonverbal communication, where thoughts, intentions, or feelings are expressed by physical behaviors, such as facial expressions, body posture, gestures, eye movement, touch and the use of space.
Body language exists in both animals and humans, but this article focuses on interpretations of human body language. It is also known as kinesics.
A few studies show that facial expression and bodily expression (i.e. body language) are congruent when interpreting emotions.Behavioural experiments have also shown that recognition of facial expression is influenced by perceived bodily expression. This means that the brain processes the other's facial and bodily expressions simultaneously.