This is thought to be due to the ability of the nutrient to decrease serum insulin, leading to more available glucose for energy. (instantknockout.com)
For every gram of carbohydrate you ate on a keto diet, you can eat two more grams of protein than you were eating before to get at most the same available glucose. (onketosis.com)
Normally, running, cycling or other prolonged exercise eventually depletes available glucose in the blood, leaving the brain short of energy. (sciencenews.org)