Bocly language is used to express feelings, sympathy and desires by many different non-verbal signals. Most often our non-verbal communication highlights or denies what we say. Non verbal communieates are many different signals sent by either speakers and listeners.
Body language is an especially important part of communication. We can read in most books about body language, that words have a little mcaning in communication (7 to 10%) unlike the intonation (about 38%) and - the most important - body language (about 55%).