Five days of ketogenic and low-carb diet and two days of high-carb diet: here is the simple plan to lose 5 kilos in 15 days with a cyclical ketogenic diet, which neutralizes the disadvantages of a low-carbohydrate diet thanks to the weekend and allows you to lose weight faster than with another regimen. But what exactly does such a diet consist of?
Simple: from Monday to Friday no carbohydrates are eaten apart from green leafy vegetables and very little fruit. On Saturday and Sunday, on the other hand, you can enjoy pasta, bread and pizza but also a dessert. While the protein content is fixed and normal (it is not a high-protein diet), the fat content rises in the first five days, and then we eat fat-free at the weekend.
What are the advantages of such a regime? It does not lower the metabolism, it allows us to eat and not go hungry, it makes us lose weight more than a traditional low-calorie one. The estimated weight loss is to lose 5 pounds in 15 days without any problems.
Here then is the weekly pattern to be repeated for a month.

INTERMITTENT LOW-CARB DIET
Weekly
schedule From Monday to Friday: low carb diet (about 1350 calories)
Breakfast: you can choose from these alternatives
a) a glass of water and lemon juice before breakfast. A package of full-fat Greek yogurt with no added sugar (natural) + a tablespoon of blueberries or currants, a pinch of stevia and cinnamon + coffee or tea
b) A coconut smoothie obtained by blending a 125 ml jar of natural whole yogurt, a teaspoon of oat bran, two tablespoons of coconut milk, half a cup of water, a teaspoon of cocoa and a teaspoon of stevia.
c) two scrambled eggswith a teaspoon of butter, a cup of green tea, 100 gr of currants or blueberries with a pinch of stevia and lemon juice
Snack:  6 almonds or 5 pistachios
Lunch:150 gr of red meat or 100 gr of white meat or 100 gr of bresaola / cooked ham / raw ham or 150 gr of fish (or 160 gr of tuna or mackerel in drained oil or 100 gr of salmon) or 180 gr of molluscs or 150 gr of tofu with a tablespoon of oil or butter + aromatic herbs and spices to taste + 250 gr of your choice among the following vegetables: spinach, lettuce and watercress, bean sprouts, endive, rocket, escarole, chicory, fennel, zucchini, herbs , brussel sprouts, radicchio, cabbage, mushrooms, seasoned with a spoonful of oil or butter or a spoonful of grated cheese, spices or herbs. A cup of unsweetened green tea (ok stevia). 
Snack: ten green olives
Dinner:100 gr of fresh cheese of your choice (ok robiola, stracchino, ricotta, mozzarella) or 60 gr of aged cheese or 100 gr of seitan + a vegetable cream obtained by blending 200 gr of boiled green leafy vegetables of your choice with a spoonful of cream or butter or oil and 50 ml of skimmed milk. A small portion of crudités including radicchio, endive, cucumber, fennel with a teaspoon of oil and spices.
Snack: 1 cube of extra dark chocolate (+ 80%)
Alternatives: sugar-free soy milk; low-carb soy cheese or rice mozzarella; soy yogurt.