my son is super active but can not gaining weight.At this he is only 11 kg .wt should I do for fast weight gaining

A. Namaste Mom Some of their metabolism and body type is such that they don't gain weight soon. but they eat well and are active enough for their age as well. Include good amounts of protein in their diet - dry fruits nuts and seeds dals legumes such as chana rajma lobia soya panner tofu fruit milk shake or badam milk etc sattu sprouts eggs chicken etc