This formula works by triggering ketosis in your body. So, when you take the Fitness Keto Ingredients, they tell your body to go into the fat burning zone of ketosis instead of just burning carbs for energy. In other words, this formula gives your body the ketones it needs to enter ketosis. And, it continuously gives your body ketones so long as you keep taking it. Basically, ketones are like the fuel that keeps ketosis on. And, the longer you stay in ketosis, the more fat you can burn away!