Firstly, creating a carbs deficit diet means you have to limit the carbs intake to allow the body to enter into a state of emergency. This could only be achieved when you lower the carbs-filled food items. Here, the biggest challenge is to stick to the low-carb diet. Not anyone could really achieve a high Ketosis state by increasing the metabolic state. Secondly, to start losing fat your body needs to achieve a high metabolic state which is called the Ketosis state.