For instance, critical thinking and decision-making skills are important for analysing and resisting peer and media influences to use tobacco; interpersonal communication skills are needed to negotiate alternatives to risky sexual behaviour. Young people can also acquire advocacy skills with which they can influence the broader policies and environments that affect their health, including efforts to create tobacco- and weapon-free zones, the addition of safe water and latrines to school grounds, or access to reproductive and sexual health services including availability of condoms for the prevention of HIV