This is absolutely a real thing. I had a calorific breakfast sandwich for breakfast this morning, a diet coke for lunch, it’s been 8 hours, not close to hungry yet. My kids think it’s odd, that I should be hungry at lunch regardless but I think that’s the way appetite is supposed to work, they just haven’t quite stopped growing yet.

That’s why people will see a skinny person eating a whole pizza and think “WTF”? They don’t see that the person is then full until next day lunchtime or whatever.

My husband says if you push past that and eat (he bulked once) that your appetite adjusts and you get bigger and hungrier. But bodies generally want to sort of stay the size they are, so don’t signal “eat, dammit!” if you have funded it enough to maintain.