I work at McD's right, and I never EVER eat their food seeing as I see how it's made. After reading about cheat days I figured today would be mine considering it's not gonna hinder me that much with my extremely high metabolism. I ate 1 BigMac and ever since I have felt light headed and my joints are sore. But, I also ate PopTarts and some nachos today too.
Could that be a change in intake of different kinds of food?
None the less, I'm not eating that crap anymore.