I'm seriously underweight right now at the age of 21. I'm unable to increase my diet, and still wish to get 1-2 inches increase in height and gain more weight.
Any tips?
You should go to gym and have a proper diet and motivational is important too.
But first he need to find buddies because going to Gym specially for newbie is very hard to do
It will look like a place in which you are not welcome so having others to go will have much motivation from you and the partners youll have