The aim of this research was to know the perception on the obesity problem of a high-school age group of subjects that are exposed to its undesired consequences by following their degree of awareness, and the involvement of factors that could influence, prevent, or improve this condition. Starting from the premises detached from the study of the professional literature, we have elaborated the hypothesis stating that presumably the identification of the opinions of a high-school age group of subjects regarding the effects of obesity and the importance of exercise in maintaining one's fitness, could constitute a starting point for an applicative intervention in the sense of preventing and improving the apparition of this condition. The research methods used were: study of the bibliographical material, the questionnaire inquiry method, the statistical-mathematical method, and the graphical representation method.