The document outlines the background information for a teacher handbook related to the ANMELO project, which focuses on using augmented reality and new media to combat unhealthy food promotion among adolescents. It discusses the processes of habit formation, particularly in the context of adolescent development and the influence of marketing strategies that target young consumers. Key concepts include the interaction between internal and external cues, the adolescent brain's response to rewards, and the implications of these factors on eating behaviors.