Fast Fit Keto It’s rich in protein and low in fat. Lean meat is the cornerstone of the paleo diet. Essentially, going paleo means eating only what the cavemen would have access to, which are things like meat, eggs, vegetables, some nuts, and fruit. Novak, Lojze “Eat Fat Without Gaining Fat – Fast Fit Keto Dieting Made Easy.” Eat Fat Without Gaining Fat – Fast Fit Keto Dieting Made Easy. If you stay on the Fast Fit Keto diet for few days, the body starts manufacturing more and more Fast Fit Keto and it greatly reduces the usage of glucose. In general body gets this energy primary from carbohydrates, then fat and if necessary also from protein.