My guess is that you simply overestimate how much you eat, perhaps by a lot. I'm pretty sure that people who are skinny without much struggle (or struggle to ga

My guess is that you simply overestimate how much you eat, perhaps by a lot. I'm pretty sure that people who are skinny without much struggle (or struggle to gain weight) generally overestimate their caloric intake, and people who struggle with their weight generally underestimate their caloric intake.