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I am underweight. How do I gain weight and muscle?
I'm doing some basic workout i.e. push-ups for approximately, last 9 months. I have gained 7 kilograms during that period. I also joined a gym 5 months ago but due to some circumstances I couldn't continue, but I did not stop doing push-ups at home. I want to gain more weight, muscle and strength. What should I do?
I consider myself a beginner because I have a very little knowledge of workout practices and all those things.
Currently my push-ups workout includes 5 sets of 30 reps.
Thank in advance.