Just a general comment on ketone measuring with a blood meter, if I go "off the grid" on extremely rate occasions and eat a high carb meal, I am producing a good amount of ketones the next morning. There may be a lag effect, as I know continuing this will cause ketones to plummet. However, I'm convinced that the human metabolism becomes adapted and more efficient at burning fat the longer one practices a keto WOE. I tend to stay in fat burning mode despite very occasional dietary transgressions due to "training" my metabolism to make fat my primary fuel. Just a hypothesis from my N=1, but now, with years of experience, I'm noticing it's easy to continue to produce a higher amount of ketones even if I venture from the low carb compound.