Communication is a two way activity. When we communicate effectively, there will be positive results. Interacting with our fellow beings will improve our self awareness, self management, personal responsibility, decision making and relationship skills.
Have you been in situations where there is a communication gap with the people around you. It generates negative behaviours such as being argumentative or hyperactive.
Communication will reduce the level of depression and improve physical function. I actually discovered that it reduces my level of stress hormone and improves my social competence.