Non-Verbal Communication

With my best friend Tyler if we are ever trying to tell each other something all we need is to make eye contact and we can tell the other where to look, whats going on, and if it is a good or a bad thing. some of the things that I do when I am annoyed are avoiding all eye contact with everyone and just looking down at the ground and rubbing my forehead and sometimes start tapping my foot.  Some advantages to non verbal communication are that you can decipher how some one else is feeling and then adjust what you are doing to accommodate for it and some dis advantages of it are that if you are trying to conceal your emotions many times people can still tell how you are feeling and such.