Understanding kinesics, the study of gestures, can improve one's ability to use gestures professionally. Some positive examples of gestures include using emblems like waving to greet others, which sends a message of friendliness. Displaying affect through smiling helps build approachability and a feeling of happiness in the workplace. Maintaining good posture promotes attentiveness and builds one's reputation by showing interest. Lastly, nodding in response to others shows attentiveness and professionalism, leaving the impression that the speaker is important.