What is. Your height weight . I can help with 4-5 KGS weight gain in month that to o muscle mass not fat

Hello..., what's your weight now ,you haven't mentioned that ..., you can gain weight Don't worry ,change your food habbit and lifestyle ..., Have egg,chicken, fish , pulses .all these contain lot of protein .. Have milk and milk products . Maintaining fitness is more important than weight gain. Do aerobics , yoga regularly or else cycling , jogging ,swimming.