Child and youth professionals can have a significant impact on children’s physical development, from supporting their physical activity to enhancing their fundamental motor skills, all of which can influence how competent children feel in their movement and how much they engage in physical activity. In this training, we review the research on physical wellness for children and youth, including the recommended daily doses of physical activity for various ages, the benefits of daily movement, and ways program leaders can help staff members or family child care providers support children’s physical development and healthy habits. We also identify VLS tools and resources that program leaders can use to support high-quality active play and physical wellness in their programs.