Even though I think fasting can be overdone (and I did too much of it one time myself), I still feel there are benefits to fasting. I still try to get in a 36 hour fast when I can, and I want to get back to a multiple-day fast at some point.
But just thinking about the “I’m full” signal is interesting. Don’t know if anyone watches America’s Test Kitchen on PBS in the US, but the vast majority of people on there are quite heavy. But some are thin. It seems like there are thin or heavy with no in-between.
Saw one thin woman redoing chocolate chip cookies so that they would be softer when they were made into ice cream cookie sandwiches (ice cream between two cookies, with chocolate chips on the outside of the ice cream). She’s probably the person who eats 1/2 a sandwich or maybe a single one, whereas I’d eat one, say “that was good, think I’ll have another”, “that was good too, think I’ll have another”… with basically no satiety. I’d have to physically stop myself, because I wouldn’t be full.
Why can some people turn off their eating/get satiety, and others can’t? I don’t have an explanation.