BioLife Keto This term refers to the percentage of a substance that is absorbed into the bloodstream and can be used to create energy. This diet involves cutting down almost entirely on the consumption of carbohydrates and replacing them with fatty acids. Some classy people opt for blood monitors which are super accurate, but I go for the cheaper BioLife Keto urine strips. As a result of a low-carb diet, your body uses fats and as a result, you will feel ravenously hungry and extremely fatigued and this is the point when you lose weight. If your body uses fats to get energy, you will lose your weight successfully. The type of diet (fats or carbs) you use as a fuel for your body makes a difference in losing weight.