i have found that i'm more intolerant of crap food. i struggle to eat as much choc / sweet stuff and just feel put off by it. i gravitate towards vegetarian food which, if you know me, is the most shocking thing ever.
not saying this is what's happening with you, just that i've found the food i used to eat now makes me feel sick.
Have you ever had problems with indigestion? Long before I started fasting, I had problems with nausea, queasiness, sickness, indigestion, and it turned out to be h.pylori - a lot of hardcore antibiotics later and I felt a lot better!
Oh sorry, I misunderstood and thought you meant on fast days..
I wonder if that's a hint of a food intolerance, which is becoming more obvious as you fast and so your system "recovers" from the food - do you have any other symptoms - tummy pain, constipation or diarrhoea? Does it happen when you eat specific foods, or anything? Is it related to anything - i.e. does it come on right after eating, when you're between meals, anything like that?
The daft thing is that I feel fine on the fast days. I'm quite enjoying the hunger pangs, it's almost like an achievement, and they are getting less each time I fast. I have no problem making it to tea time, and i end up full enough. It's more that I feel queasy on the non fasting days!