Words have boundaries, but non-verbal communication rises above language & cultural boundaries – because it does not use words. Our non-verbal communication is our body language, most of which is culturally determined.
No one teaches us body language. As we grow up, we learn it vicariously – our mind sub-consciously picks it up by observing others around us.
Body language continues to communicate even after the exchange of words is over. it means that even if we want to, we can never NOT communicate.