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 cannot grow in height anymore , but you can still gain weight. You should eat foods that is high in protien and drinking milk also is one of the source to gain weight. A proper exercise will also help you in gaining weight , most people wants to gain weight and they go to gym so that they can build their body and witha proper diet is a big help for them.