As in business, speaking has extremes. For example, the opposite of randomly walking around the stage without any purpose, you will find what I call the statue speaker.
This is the speaker that stays in one spot throughout the entire presentation whether it is a 10 minute speech or a two hour presentation. They look as if they are glued to one spot whether they are behind a lectern or standing in the middle of the stage.
The benefit to moving throughout your speech, it forces your audience to use their eyes. As a result, you make your audience watch your actions. Your moving on stage stimulates your audience and allows them to concentrate on you.
Also as you move from one point to another point in your speech, you have the opportunity to stop and pause. This pause you to collect your thoughts and your audience to review what you just said. Being silent is a powerful tool in speaking.
Lastly, your movement on stage lets you release some of your pent-up energy or nervousness. Most speakers have excess energy and by moving you can direct it to different parts of your speech.
Don’t be a statue in speaking, let your movements serve a purpose.