I didn't link this study because it included the words "fat gain is proportional to caloric surplus", neither is it meant to be all encompassing on what the bod

I didn't link this study because it included the words "fat gain is proportional to caloric surplus", neither is it meant to be all encompassing on what the body does in a surplus. The study is evidence that macronutrient composition has an effect on how much fat you gain, and I gave some reasoning for why this is the case. If you're not convinced then I suggest you do some more digging, I don't have time to find the all relevant papers for you. > it's just obviously true that adult mammals experience changes in the amount of protein stored on their bodies on the same timescales as weight gain and loss occurs. The body has both catabolic and anabolic processes running concurrently all the time, you'll see increase in one kind of tissue when overall one of these processes is more active than the other. caloric intake and macronutrient breakdown obviously affect these processes, as does exercise.