International audience Behavioral addictions are of growing interest in today's world indicating the need for novel therapeutic methods of biopsychosocial type. Amongst the numerous behavioral addictions, our clinical experience at CAPS (Centre d'Accompagnement et de Prévention pour les Sportifs) brought to our attention the problem of exercise dependency in sports population. This addiction categorized as positive addiction faces a significant problem with respect to definitions, epidemiology, models, diagnostic criteria and measurement scales. Through this clinical case study, we intend to throw light upon the different aspects of this addiction, particularly its co-occurrence with eating disorders and methods of treatment. Unlike other addictions where the consequences are said to be harmful, exercise dependency is valorized by the individual and society. This article also throws light upon the different measurement scales used to quantify exercise dependency. It also discusses the clinical significance of a tool being currently validated which aims to evaluate the intricacy of exercise dependency and eating disorders. (PsycINFO Database Record (c) 2015 APA, all rights reserved). (journal abstract)