I’m far from optimal too! But I cannot not have protein in my meals. Anytime I have only carbs or fats I feel so sick. Carbs and fat together are slightly better but not by much. I feel super hungry if I don’t have protein with it. On the other hand, I also feel very hungry and hypoglycaemic if I eat only protein!That's interesting, I feel more sluggish when I pair it with protein. Not quite sure what it says about my metabolism but I know I am far from optimal.
So, basically I gotta have all of them together in the meal or I suffer.