Body language is a form of non-verbal communication that conveys messages through facial expressions, gestures, eye movements, posture, and physical behaviors. Signals are sent and received consciously or subconsciously and accurately interpreted through observing clusters of behaviors. Some key behaviors that can indicate dominance, supportiveness, negativity, or compliance include eye contact, smiling, touching, posture, and hand gestures. Factors like attitudes, appearances, expectations, and settings also impact the messages sent and received through body language.