Question

how to gain weight in a healthy manner ??? and with a perfect dite plan

Answer 1

eat lot of protein
if you are non vegetarian then you can eat chicken and eggs. (especially boiled eggs)

or if you are vegetarian then you can eat fruits which contains high amount of proteins such as Banana

Hope it helps you:)

Answer 2

eat boliled eggs .
have pulses. proteins
and have lots of fruits .