The purpose of this study was to investigate what adolescents know about topies commonly covered in Health classes (eating disorders, exercise, nutrition, caffeine, and sleep) and whether students know aS much as they think thtey do about these topics. We found that 9% of the students correctly answered all of the exercise questions, 2% nutrition, 2% sleep, 3% caffeine, and 5% eating disorders. Participants did believe they knew more about their health than they actually did. Results suggest that knowledge can clearly be improved.