Hey arsh,
Body language is the key to an  effective communication. Body language always appreciate at first while having communication with someone , a communication  consist around 65 percent of non verbal communication. Body language speaks first than the mouth or tongue ,one must be very much sound with their action as Action speaks louder than the world.
People recognise and remember us because of our action and behaviour , having any sign of bad body language leads to loss of network for people as body language let other people know our feeling and emotions.
Hope you find it helpful!