This question already has answers here: I am underweight. How do I gain weight and muscle? (15 answers) Closed 7 years ago .

I am going to gym and doing weight lift and other exercise for last three months,my target is to gain weight and muscle.Unfortunately I didnt gain weight and my muscle didnt increase(bicep and tricep is getting shape and muscles are getting harder).

I eat sufficient amount of food daily with meat and vegetables.Also taking Soy Protein for weeks.

Any specific advice to gain muscle and weight?

Can I take protein shake now,I am assuming I am not getting enough protein for body.

Many people says gym beginner can not take protein shake,is it true?

Thanks in advance.