This book explores in depth Michel Foucault's theory of how modern societies have developed systems of power that shape and control the behavior of individuals through standardization, a tool that operates silently but effectively in all spheres of life. In these pages, the reader will discover how disciplinary mechanisms including constant surveillance, classification and correction turn individuals into useful and docile bodies, adapted to the ideals of productivity and obedience demanded by power structures. More than a theoretical analysis, this book invites us to reflect on how these processes influence our daily lives, from the way we educate ourselves to the way we relate to others and to ourselves.