This CD-ROM has been built based on an effective and fruitful collaboration between health and education sciences professionals. They aimed at promoting healthy ways of life among teenagers aged from 13 to 16 years. As a health education tool, this CD-ROM describes the osseous development and highlights the critical role of a varied and balanced food, rich in calcium and essential nutrients as well as the regular practice of physical activities. This CD-ROM is suitable for both individual and group trainings and proposes various interactive modules: videos, games, printable pedagogic cards, references, etc.