Gestures, a form of body language, are also a part of your overall visual picture. They are visual reinforcements of the words and ideas you are trying to communicate to your audience. Gestures include hand, arm, and head movements and can enhance your presentation or detract from it. Have you ever had a conversation with someone who "talks with their hands?" It some cultures, it is an accepted and commonplace addition to spoken communication. In our culture, some hand gestures such as finger pointing and fist raising can be interpreted as hostile or threatening.