Experiences in many countries show unequivocally that the engagement in the overall activities aiming at shaping people’s health behaviours, that is, at undertaking efforts to increase competence of individuals and even groups at different levels of social life organization, yields expected effects. It has been known for a long time that preventing harmful phenomena is much more profitable that actions against negative results which have already emerged. One of the important elements of a lifestyle, often having tragic health consequences is undertaking risky actions in the everyday life of school-age children and youth.