If you fail to gesture while speaking you may be perceived as boring and stiff. A lively speaking style captures the listener's attention, makes the conversation more interesting, and facilitates understanding. Standing erect and leaning forward communicates to listeners that you are approachable, receptive and friendly. Interpersonal closeness results when you and the listener face each other. Speaking with your back turned or looking at the floor or ceiling should be avoided as it communicates disinterest.
Cultural norms dictate a comfortable distance for interaction with others.
You should look for signals of discomfort caused by invading the other person's space. For maximum teaching effectiveness, learn to vary these six elements of your voice. One of the major criticisms of many speakers is that they speak in a monotone voice. Listeners perceive this type of speaker as boring and dull. Ensure the receiver has a chance to comment or ask questions.