Body language conveys much of human communication and emotion. It can reveal one's true feelings and attitudes even when words say something different. Research shows that over 85% of meaningful communication is nonverbal. Facial expressions, eye contact, posture, gestures, and other physical cues give insights into one's mood, confidence level, interest, and personality. Things like yawning, foot tapping, or fidgeting can indicate boredom, discomfort, or impatience. Maintaining eye contact and having an open posture helps engage others positively.