Body language is a form of non-verbal communication that conveys messages through gestures, facial expressions, and eye movements. Research suggests 60-70% of communication is non-verbal. Body language can provide clues about one's mental state and attitudes. For example, it can indicate feelings like amusement, embarrassment, or pride. Maintaining eye contact and mirroring another's posture are techniques used to build rapport. Different eye gaze patterns have specific meanings, such as looking between the eyes and nose indicating a level conversation. Mastering one's body language can help one advance socially and professionally.