Nowadays, society is dealing with numerous health pro\u00adblems (increase in the prevalence of cardiovascular diseases, obesity, depression, stress, anxiety) which advise the adoption of a series of measures aimed at increasing wellbeing. In this regard, it has been amply proven that engaging in regular, systematic physical exercise leads to a series of physiological, morphological and functional adaptations which improve people\u2019s psychobiological health. The fields of education and extracurricular activities should accept part of the responsibility for the job of making access to a better quality of life possible for young adolescents, whose lifestyle is predominantly sedentary, by fostering the creation of active living habits and the adherence to the practice of physical-sport activity. This article undertakes an exhaustive survey of the strategies that educators and people in charge of school sports should bear in mind to foster a working climate and effort that allows adolescents to increase the perception of their own competence and self-efficacy and therefore to make physical exercise a part of their daily lives.<\/p>\n\n