Parents are key to promoting children's healthy growth and development. However, school nurses need knowledge about how to best support parents' health-promoting activities. This study aimed to explore parents' thoughts regarding their normal-weight 6-year-old children's food and physical activity behaviors as expressed during health conversations with the school nurse. Qualitative content analysis of audio-recorded conversations (n = 30) showed that parents think of their children's behaviors in terms of: (a) children's personality in relation to food and physical activity; (b) recognizing children's food and physical activity behaviors; (c) parenting in relation to food and physical activity; (d) interaction with children in situations around food and physical activity; and (e) contextual circumstances to promote children's healthy food and physical activity behaviors. The study contributes with novel knowledge regarding clinical work in health promotion, with suggestions for how school nurses can engage parents in promoting and sustaining healthy food and physical activity behaviors.