[NewChief]

Originally Posted by Frosty

I do fine for the first two days but usually hit the wall on the third and then feel like death warmed over. It takes three days to deplete the glycogen from your liver through fasting so I imagine that's what's happening.

Yes. You're hitting ketosis at that point and basically getting what people call the "keto flu." If you power through that, you'll really start to reap the rewards as your body starts burning those fat reserves.