is there any physical activity for 6years old baby boy weight gain?? because my kid is eating but not gaining weight much so please suggest any physical activity to gain

A. I feel swimming is the best to go for since it is a life-saving activity and requires a lot of effort effort and keeps the body fit also so you can try that and with that the hunger also will increase for the child hopefully that the appetite is going to be better and the weight gain and growth is also going to be good