Physical activity, whether in the form of sports or general exercise, is beneficial to people’s physical and mental health. However, screens, sedentary lifestyles, and many other societal factors are now increasingly hindering participation, particularly among children and adolescents. In this context, how can we encourage participation in sports and physical activity? And what role can sports clubs, local communities, and various community spaces play in promoting public health? About fifteen experts contributed to this special report, which presents the current state of scientific knowledge and best practices, and summarizes recommendations for professionals in education, social services, and healthcare.