This document provides instructions and levels for an assignment on the difference between health knowledge and health behavior. Students are asked to complete one of four levels. Level 1 requires defining knowledge and behavior and explaining three things people do even though they know they shouldn't. Level 2 requires defining knowledge and behavior and explaining two reasons people smoke, don't exercise, and eat poorly. Level 3 asks students to analyze reasons Americans don't act on their health knowledge. Level 4 has students provide 10 reasons and an example for each.