I just learned something that caused me to switch from eating 100% carnivore to adding maybe 10 - 15 grams of healthy carbs (like blueberries) into my diet.I fasted from carbs for five straight days
A carnivore diet causes blood sugar to be too low which activates cortisol to raise blood sugar up to a normal level which is good except cortisol raises your blood pressure and also causes belly fat. So we want our cortisol to get activated as little as possible.
Solution: A small amount of carbs.
The best time to eat carbs is right after exercising when your blood sugar is low. Or maybe a small amount of carbs before exercising also.
Maybe this is old news to you but it was new to me. My source for this information is below.