You might want to reconsider that apple. We carb count for a reason. The carbs supply the fuel. When carbs are low enough, the body switches to fat, either those provided by eating or from body stores.

You will learn more and faster if you pick a plan and work it rather than recreating the wheel. Atkins and Westmann make their plans publicly available at no cost.

Its hard to convey all the info in s 400 pg book like DANDR. The abridged version is posted on this forum.