It's not fair that when you eat well for several weeks, the good things that happen are sneaky and gradual, and you barely realize that anything has changed (except the comforting knowledge that 10 pounds are gone)—but when you eat crap for ONE DAY, you feel like you got run over by a truck.
We were out of town all day for my son's rock climbing competition, and I had two fast-food meals, a sub sandwich and a burrito. I threw in a fountain Coke at the last minute since I wanted one for the drive home and since it was a "whatever" meal. I'm still within my self-imposed limits for non-Paleo for the week, but now I feel woozy and headachy and thirsty and like I'm coming down with something (not that I will; I never get sick). It's that gluten/sugar hangover!
I'm kind of looking forward to cooking tomorrow.