Rapid Fast Keto Boost Taking an exogenous ketone supplement like Rapid Fast Keto Boost helps your body to start burning fat like it does while on a ketogenic diet. As a result, you will notice a rapid surge in your energy and also an increase in your weight loss.The active component in Rapid Fast Keto Boost that imparts impressive weight loss benefits to this supplement is BHB ketone. So far, your body has been completely dependent on carbohydrates for its primary energy requirements.