This document discusses non-verbal communication and body language. It explains that body language, gestures, facial expressions, and other non-verbal cues account for a large portion of communication. Specific types of body language discussed include kinesics (gestures and expressions) and paralanguage (tone of voice and other auxiliary cues). The document also explores how body language is used to convey emotions, personality, confidence, stress, and other states, as well as how it can indicate deception. Cultural differences in body language are also addressed.