I was strict clean dead on carnivore and in month 7 or 8? (a while ago, not sure on timing but later in the game) I got the most fatigued, tired, exhausted few weeks of my life. I was shocked. I could barely function but as all carnivores say to others, keep the faith! and I did and in the 3rd week, I boomed right back in full energy and never once had that again.
Why? Not a clue on it at all.
Adaption, when it hits you will do strange things but seriously, keep the faith, be sure to eat GOOD protein and fat…that is a key the body requires and keep on trucking.
I had normal tired thru adaption time also. You will get thru it truly. Eat well, don’t skimp on food, be sure to get some salt in ya and all that normal stuff that is needed as one adapts. To me it is all normal and just get thru it and thrive down the road