You're mostly right, but while you may produce ketones (aka becoming ketogenic), you're not necessarily in ketosis (using said ketones). Maintaining ketosis is a figurative balancing active of nutrition and workload that can easily be pushed off balance by disruption of circadian rhythms, stress, nutritional swings, etc. For some people, it can take several weeks of low carb dieting to go full on into ketosis. While ketones have several beneficial effects, they typically don't last very long and maintaining that state puts your thyroid in a nasty place. Enter CBL and CNS. These both pro is the stimulation while low carb dieting to avoid the adverse thyroid effects of long term low carb dieting. The point of the prep phase ok CBL is to deplete muscle glycogen, not go I to ketosis. While you may become ketogenic, you won't likely go into utilizing the ketones. CNS operates similarly, but requires significantly less workload while keeping to muscle glycogen stores ok a cycle of emptying, refilling, emptying again, etc, while keeping your body fat adapted to deplete fat store in the process. The spiking in CNS is to stimulate your thyroid and also to help produce more lepton for the week ahead so that you can burn more fat in the next cycle. Neither of which are ketone dependent.This is, to the best of my understanding, how and why the diet is structured as such. If someone has more info or can correct me, please do so, but this is simply my understanding. Sent from my iPhone using Tapatalk