Kinesics is the study of body movements including gestures, head movements, posture, eye contact, and facial expressions. It examines how these nonverbal cues accompany and illustrate verbal communication, convey emotions, establish connections, and regulate social interactions. Key types of gestures are emblems, illustrators, adaptors, and touch behaviors which provide information about arousal. Head movements, eye contact, and posture also signal interest, attentiveness, dominance and formality in interactions. Facial expressions particularly communicate core emotions.