 The results of this study suggest that male children have higher levels of physical fitness than female children. Additionally, the researchers observed that physical fitness improves with age, regardless of gender. Furthermore, normal weight or physically active children had better aerobic capacity and a healthier body composition compared to those who are overweight or obese. The authors concluded that keeping optimal physical fitness levels throughout one's lifetime requires adopting a healthy lifestyle from childhood, such as engaging in regular physical activity. This article was authored by Andres Rosigillaman, Pedro José Corriolópez, and Elisio Garciacanto.