Is doing the opposite of weight loss advice healthy for skinny people to gain weight?

Question by Xcal: Is doing the opposite of weight loss advice healthy for skinny people to gain weight? I'm a skinny guy (im 17, 130 pounds), but pretty athletic. If I want bigger arms & calfs, in general want to gain more weight. If I follow the opposite of weight loss advice, such as not exercising and eating foods like cake/donuts, (along with obviously protein shakes, will I gain muscle mass? Another thing I want to ask is if "high protein" but low calorie whey protein drinks (this

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