Group 1 - The article emphasizes the importance of transitioning children from "vacation mode" to "school mode" as the new school year approaches, highlighting the need for health precautions to prevent infectious diseases [1] - It identifies three main categories of infectious diseases to be wary of during the school season: respiratory diseases, intestinal diseases, and mosquito-borne diseases, particularly in southern regions [1][2] Group 2 - Five protective measures are recommended to prevent the aforementioned diseases: frequent handwashing, maintaining home hygiene, ensuring good lifestyle habits, timely vaccination, and monitoring children's health for symptoms [2] - The article stresses the significance of physical activity for youth, addressing health challenges such as myopia, obesity, and psychological issues, and suggests that sports can foster resilience and a positive mindset [3][4] Group 3 - Guidelines for youth sports participation include promoting diverse activities, gradual intensity increases, and balancing local and overall physical development, while emphasizing the importance of collective activities for social skills [4][6] - Key elements for children's physical activity are identified as "light, vision, and posture," advocating for outdoor time, proper eye care, and maintaining good body posture to prevent health risks [7] Group 4 - The article discusses the potential for children to experience depressive emotions as they transition back to school, with symptoms such as low mood and irritability, and differentiates between transient depressive emotions and clinical depression [8][9] - Recommendations for parents to help children manage these emotions include teaching emotional acceptance, preparing for school routines, and managing academic pressure through structured planning [10]