I'm mostly carnivore and spend a lot of time in medium ketosis, but still get hungry. Like someone else said I think hunger is mostly mental. My longest fast is 4 days, after the first 24 hours I really didn't feel hungry. Be careful breaking your fast, bland food in all amount. Something like two fried eggs no seasoning or a bit of chicken. A large meal with lots of seasoning is guaranteed to put you in the 🚽 for an extended period of time.