Non-verbal behavior refers to the communication that occurs through body language, facial expressions, gestures, and other physical cues, rather than through spoken or written words. It is a powerful form of communication that can convey emotions, attitudes, and intentions without the use of language. Non-verbal behavior is an essential aspect of human interaction, as it can greatly influence how a message is perceived and understood. It includes elements such as posture, eye contact, hand movements, and tone of voice, and can vary greatly across cultures and individuals. Understanding and interpreting non-verbal behavior is crucial for effective communication and building strong relationships.