Try Googling “TDEE Calculator”. Once you plug in your stats, the site will calculate your total daily energy expenditure. This is a useful guide in determining how many calories to eat. From there, if you are trying to lose weight, just reduce your caloric intake, increase your expenditure (through exercising more), or use a combination of the two.
What’s going on is your body is trying to adjust to fat burning. So, this is a good thing. What you need to do is concentrate on getting more vitamins in the diet. Now, the one nutrient you need a lot of to keep the fatigue away and to help you in the metabolism is B5. B5 also helps the adrenals and metabolism along, and keeps that fatigue away. Promise!
A ketogenic diet, or keto diet, is a very low carbohydrate eating plan that forces the body to use fat rather than glucose as a primary energy source. When you follow the plan, you build meals around fatty foods and significantly restrict your intake of carbohydrates and protein. As a result of that macronutrient balance, acids called ketones are produced in the body. When ketone levels are high enough, the dieter is in a state of ketosis.