ABSTRACTNumerous health behavior theories (HBTs), each which attempt to explainwhy individuals engage in (or fail to engage in) health-related behaviors,exist in the literature. While much attention has been devoted to testingindividual theories, little attention has been paid to issues that arise in theselection of theories. The current article has three goals. First, to describesome of the most widely used individual-level HBTs. Second, to discussthe application of these theories to successful ...