The state of ketosis is when your body burns ketones instead of glycogen for its fuel. If that explanation is a little too scientific, it means that your body is using fat — either your body fat or fat from your diet — instead of sugar/carbs. Get Favourite Our Keto Dessert Recipies>> https://bit.ly/3yvVGAq The keto diet limits carbohydrates to between 20 and 50 grams per day. Protein also gets limited to roughly 1 gram per pound of body weight, because too much protein gets converted to glycogen/sugars. That leaves 75 percent of the diet for fat consumption.