Why add rice and fat to this diet, once the fat fast part is complete? Why not protein? Outside of a fat fast, avocado is marginal in protein, rice is marginal in protein. Add fat and alcohol, and you get something below marginal... The point of a fat fast is to keep insulin as low as possible, without actually doing a complete water fast. Add rice and you lose that, and you lose the improvement in lean mass retention that you'd get if the added calories came as protein rather than carbohydrate.