The whole amino-acids thing that the author talked about made me cringe a little bit. "Amino-acids" is just basically the fancy word for "proteins" (I know there are amino-acids that aren't proteins, but let's not be nitpicking here) and in turns, "proteins" is just another fancy word for "shit we eat everyday." It doesn't matter that much what form it is (meat, plants, milk, powder), when digested in your body, it's proteins. Proteins give your body energy. Proteins are not some magical alternative shit to your food, it's actually food.

"Oh I don't eat, but I '''take in''' amino-acids" is like saying "Oh I don't drink, but '''take in''' dihydrogen monoxide."