I talk about this extensively. In fact, most people fail to realize that even in standard individuals, lactate is the primary fuel used to produce glucose in the liver through gluconeogenesis. Lactate is produced by red blood cells. Also, yes, muscle cells.

@James Dawkins Yes. In fact, for every single muscle fiber twitch of all intensities, glycogen is required. Even in ketogenic individuals. Schulman and Rothman established this years ago in two studies, the first of which is called "Shaking up glycolysis," and the other of which is called "The glycogen shunt." I talk about this in the CCI program as well.

Less damage incurred, higher ability to withstand pathogens and other damage, in many cases. So yes, this can happen. I've seen it in myself and others! Especially with seasonal allergies.

Eating in general is going to involve an allocation of lots of blood flow to the stomach, so your performance very often can still decrease even on carnivore if you've just eaten as compared to if you were fasted. However, the blood sugar fluctuations would be far more stable, which assists in postprandial activity, so that is not a negative here, as it is in the SAD circumstances. My performance after I've eaten a carnivore meal is worse than if I were fasted, but it's very manageable—better than most standard Americans generally, Lol.

@Lindsey Morales Completely agree with this. Didn’t even think about it until you said it.

@Christopher Medina Yes. Not only this, but there are many different forms of intelligence, so an IQ test itself has limitations. It's too broad of a category, in my opinion. Lumping all intelligences into one number or figure is too reductionist for practical inferences to be made from such values.

@James Newmeyer I’m sure it has! It has for me, for sure.