Fasting

I know i am a bit behind, its was just something funny i noticed last night. I was sitting there and someone was eating some food next to me, and all i could think of was how that person could consume anymore food after two days of non stop eating. forget the four meals yuo had as standard, if you walked into anyone elses house they shoved food right infront of you and obviously, not wanting to offend you ate. so im sitting there yesterday, the smell of microwave pizza wafting towards me, and all i could think of, was never eating again! and i was thinking how exactly a week earlier i was sitting in shul at kol nidrei, thinking how i couldnt wait to eat. and then i realised something funny, something that i do every fast, i noticed how i always focus on what i could have eaten prior to the fast. i sit there thinking, "oh man, i should have had that slice of melon or that burger, it was just sitting there, nobody was having it....." but im sure loads of people do that.
what i want to know is, how far back do people go when dreaming about food, because this yom kippur i was thinking about food i should have eaten over the summer. i was thinking back to when i was in teaneck and how i should have bought the nachos, or how when i was in the local supermarket i should have bought some celery. i have wierd cravings.
it amused me slightly about how i was craving food from months earlier, which would have had zero effect on my fasting experience a long while later!