For the most part, with ketosis as part of a keto-diet plan, you will feel fine, but you will also feel many additional benefits. For example, many people point out that they feel smarter and better able to concentrate in a state of ketosis. Digestion is also improving, since well-known food allergens, such as gluten and lactose, are usually not part of the ketogenic diet.
Most people will also feel more stable energy levels throughout the day because fatty acids and ketones are forms of long-term energy. When you follow a carbohydrate-based diet, your body is prone to blood sugar fluctuations due to the inherent nature of carbohydrate and glucose metabolism.
A small lack of ketosis is the initial week or two when you just go on a ketogenic diet. This phase of staying in ketosis can lead to a condition called “keto-flu”. In this state, you feel a little ill at ease and scattered for a short period while your body adapts to new sources of energy. Do not worry, it passes quickly, and you will feel much better after the completion of the transition.