KetoLean Ultra Exercise also uses up your glycogen stores, helping you get into KetoLean Ultra faster. Fat has 9 calories per gram so we divide the calories by 9 to get grams. 2000 total calories - 500 to 700 = 1500 to 1300 calories from fat. While in this state, your body becomes more efficient at burning fat for energy and shifts the body's metabolism away from carbs. KetoLean Ultra diets go by many names. This is a problem for KetoLean Ultra because glucose/sugar is the easiest molecule for the body to convert to energy.