I knew this one guy at a place I used to work at. He said he ate 3000 calories a day. He was also about 130 lbs and 5'8" ish. One day I saw him eating lunch he said he was starving and havent aten all day so he was going to eat two bowls of cup of noodles ramen. He wasn't able to finish the second cup.... I could eat like 3 cup of noodles and I still wouldn't be full. I don't want to say I don't believe you but unless you have sort sort of medical condition you are probably eating more in line with the average person your weight/build then you probably think. People's metabolisms may be a couple of percent points away from others of people with similar body types but this whole thing of certain people having to eat a ton is probably exaggerated.
https://www.sciencedaily.com/releases/2011/04/110403090259.htm Some research on why I fast. 2000% hgh production.... 20 times more.
Also this "Enhance cardiovascular and brain functions and improve several risk factors for coronary artery disease and stroke including a reduction in blood pressure and increased insulin sensitivity"
Mattson, M; Wan, R (2005). "Beneficial effects of intermittent fasting and caloric restriction on the cardiovascular and cerebrovascular systems". The Journal of Nutritional Biochemistry 16 (3): 129–37