Height-105= standard weight (kg), which can be calculated by yourself. Visually, the boy in the picture is fatter. No comparison, no harm. The key is that the boy next to you is thinner and the rest of the picture can't be seen clearly. Visually, the weight of boys is about 120, only much more. There is a simple reason. All parts of the body have basically developed in an all-round way, reaching a well-off level. If you have to choose one, the small belly should be one of the wealthy classes. More eye-catching. Of course, as you grow taller, these will change a lot. People don't often say, "first get fat, then get fat." Do you know that?/You know what? Be happy and do more exercise. You will get better and better!