This document provides an overview of non-verbal communication in 3 paragraphs or less. It discusses that non-verbal communication accounts for 93% of interpersonal communication, including 38% vocal tones and 55% facial expressions and body language. Some of the key aspects of non-verbal communication covered are body language signals from the face, eyes, arms, hands, and legs. Sign language and other audio and visual signals are also briefly mentioned. Advantages of non-verbal communication include low cost and easily conveying messages, while disadvantages can include increased potential for misunderstanding without words.