Standing or sitting in a relaxed professional manner is a positive posture nonverbal. Also, being comfortably upright, squarely facing an audience, and evenly distributing your weight are all aspects of posture that communicate professionalism, confidence, attention to detail and organization. Nonverbals communicated by moving the trunk of your body are called body gestures. Several different body gesture strategies are to move to change mood or pace, draw attention, or reinforce and idea. Some examples are stepping aside for a transition or stepping forward to emphasize a point.
Hand gestures are what are most often identified as nonverbal communication.
One reason is because they are so obvious to a receiver and seen to be partly conscious. It is important to let your gestures flow naturally as if in conversation with a close friend. You may also use gestures to specifically describe shape and size, emphasize a point, enumerate a list, or picking out a specific item. In conjunction with hand gestures is touching. This is a very powerful communicator especially for establishing a link to a receiver or conveying emotion.