explain why there is a growing concern over the physical fitness of children and adolescents.

Brief Explanations:

There are multiple factors. Sedentary - lifestyle with more screen - time reduces physical activity. Unhealthy diets high in processed foods contribute to obesity and related health issues. Also, reduced physical education in schools and safety concerns in neighborhoods limit opportunities for exercise. These all lead to growing concerns about children and adolescents' physical fitness.

Answer:

There are multiple factors such as sedentary lifestyles, unhealthy diets, reduced physical education, and safety concerns that contribute to the growing concern over the physical fitness of children and adolescents.