Three films are featured here: *L'eau froide* by Olivier Assayas, *Trop de bonheur* by Cédric Kahn (a mockumentary about adolescence), and *Les roseaux sauvages* by André Téchiné (a story about teenagers in the 1960s). These three films help teenagers find their bearings and allow adults to understand and reflect on youth, while demonstrating that cinema can play a role in health education for young people.