In the same way that a monotone can lull an audience to sleep, so can a stale, dull physical presence. This doesn’t mean that you need to be doing cartwheels throughout your speech, but it does mean that you should look up from your note cards once in a while. Otherwise, you’ll be little more than a talking head, and your audience will quickly lose interest. What’s more, effective visual cues—like dressing appropriately, using effective eye behavior, incorporating facial expressions and gestures, and controlling body movements—can enhance a presentation, helping you clarify and emphasize your points in an interesting and compelling way.