If a skinny girl works out to P90x while taking creatine will this help her to build muscle mass?

how to build muscles mass, get bigger the quickest way while working out at the gym? protein? or creatine?

Whats a good supplament to take while working out that builds muscle mass and doesnt have creatine in it?

Does creatine actually help build muscle mass or weight gain while working out?

Creatine and working out to gain muscle mass?

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