Nonverbal communication plays a crucial role in persuasion, accounting for up to 90% of the message. It includes facial expressions, gestures, posture, and tone of voice, which can reinforce or contradict verbal messages. Understanding different types of nonverbal cues is essential for effective persuasion. Body language, eye contact, touch, personal space, and vocal cues all contribute to how a message is perceived and can significantly impact its persuasiveness.