It doesn't ever seem to matter HOW much carb I eat, I can always get back into ketosis in a day, no problem. I don't do CKD, by the way, it didn't work for me. TKD worked better for me than CKD, and I'm liking my little cutter that I'm currently doing right now. It's basically a week of low-fat, a week of low-carb, with the heaviest lifting on the carbup week, and the most cardio on the low-carb/calorie week.