Yep, that's a big part of the reason why I'm a fan of actual fasting. Even for people at a healthy weight range. I think in general it's just a good way to align oneself with your natural instincts. Kinda like a forced reboot of your relation to taste, hunger etc. Plus there's a lot of value to knowing how you do in emergency situations like that. Just how much you can depend on your body if there's no food, how much the people who depend on you can in those situations as well, etc.