RESUMO
The topic of this article is the classed formation of health lifestyles in youth. Based on longitudinal interview data (41 youths, 17 of their parents) from two contrasting class contexts in Norway, we investigate how health lifestyles are reproduced across generations and during youth, focussing particularly on diet and physical activity. We find that young people's health lifestyles are powerfully shaped by social class and moulded over time in ways that may impact their further health trajectory. The health practices of upper-class young people are closely monitored; they are practically and emotionally scaffolded by their parents. Developing a rigorous health orientation, they come to view health as an investment for the future, intrinsically linked to achievement, discipline and identity. Working-class parents focus more on the child's autonomy in matters of diet and physical activity. Separating health practices from family life, their children's health orientation becomes more fragile and their children's health lifestyle trajectory more arbitrary and vulnerable to peer influence and marketised body cultures. Combining temporality, youth agency and relationality, it becomes evident that young people internalise their parents' health lifestyle, leaving room for different expressions of youth agency.