Why might two 16-year-old males of the same weight need different amounts of energy?

Two 16-year-old males of the same weight might need different amounts of energy due to variations in their metabolic rates, physical activity levels, and muscle mass. For instance, one may be more physically active or engaged in sports, requiring more energy for growth and recovery. Additionally, differences in genetics and hormonal levels can influence how efficiently their bodies use energy. Therefore, even with the same weight, their energy needs can vary significantly.