Alright, I used to be fat, so this point I ACTUALLY can understand. I overate on a lot of nutrient-poor, carb heavy foods. Not a whole lot of lean protein and fiber, in the grand scheme of things. Even though I was eating massive amount of calories, an hour later I'd be starving. Like, maybe my stomach felt kinda full but that it-hurts-to-breathe hunger was there! And the cycle would constantly repeat, all day. I think my body was constantly carb crashing and begging for some fucking protein and veggies--you know, REAL FOOD, and the hunger signals were there hoping I'd shove some down my gullet. I've since been reformed and its really amazing how filling real food is.