You can use the knowledge of body language to identify if confidence‚ dominance‚ and other characteristics are existing in people. On the contrary‚ you may also perform these gestures when you want to convey certain personality traits to subconsciously influence others. Cool‚ isn't it?
Communicating with other people would become a much easier task. You will have a better understanding of people. It's like your eyes will be opened to the world for the very first time.