This paper makes two contributions at two different levels: one is about a design principle of HCI, namely the provision of personalized and dynamic feedback in interactive applications; the second contribution is a demonstration of the need for visual and dynamic representations to explain the design of interactive interfaces. At the first level, in the context of patients managing their health behavior, we analyze the design of feedback that builds on Visualization, Personalization, and Interactivity. Utilizing these elements DPF creates the right atmosphere for a unique InfoVis experience. We argue that such feedback will increase comprehension, participation in planning health behavior and self-efficacy. These three factors positively affect intentions to change behavior as recommended by the medical staff. A pilot study demonstrates the feasibility and impact of personalized and dynamic feedback. At the second level, we demonstrate how to use, contingently, three forms of visuals: static, dynamic distilled visuals and dynamic visuals in context (film).