Calories do count. Your AMR may go up on a ketogenic diet, but if you eat over that, you will gain weight. 'The Anabolic Diet' is specifically about a CKD that is used to add weight. You can in general, though, eat as much as you want because most people aren't very hungry once they get into ketosis. Ketones suppress appetite, and it's hard to eat a lot of food when all you're eating is meat. The foods seem to be more 'heavy' if that makes any sense.