>I know several people who are feeling hungry because they're not dead, regardless of how much calorie surplus or deficit they have.
Are you saying 1000kcal vs 200kcal deficit makes no difference?
>Diet research would be a lot more interesting if there were ways to classify people by their 'metabolism type' and then see what can work for which type. Maybe there would be more reproducability that way, too.
You can easily track your maintenance calories, by tracking your weight vs intake overtime.
I am a person like that. There is no "calorie deficit" involved. I can, if I let myself, eat 2000 calories of moderately bulky, high-protein food in a sitting and be vaguely hungry again in six or eight hours once my stomach's emptied out. The only reason I'm not whale-sized is active calorie-counting of every meal, every day.