How i improve my body health?

Question

i am 25 yrs young man. at the same time i am very very lean. my total weight is 48kg only. how i gain my weight. somebody told daily you eat badam milk. is it correct? any other good solution is there for improve my body? please give me good answers.

Answer 1

Don't master brut  

Answer 2

u drink 2cup milk ,eat an eag everyday

Answer 3

protein