This thesis consists of theoretical and practical part. The theoretical part introduces the basic terms like health and healthy lifestyle and describes principles of its adherence by children and young people, mainly in the area of healthy eating and marginally also the influence of other components of healthy lifestyle. Also, the theoretical part mentions possible influence of institutions on forming of these components, their resources for supporting healthy lifestyle and subsequently clarifies the process of Bronislav Malinowski's analysis of institutions. The practical part focuses on the particular institution which is Primary school Krásná Hora nad Vltavou. Also, practical part aims to verify the hypothesis that the given institution ...