I didn’t fast long, just 24 hours but the next day I had nausea, a bit of a headache, felt what I would describe as ‘carsick’. I still feel a bit off today. Could be coincidence.
I did drink electrolytes and added pink salt to herbal tea the day of fasting.
Some people require more salt than others. (Not sure how much you had). It takes me 3-4 tsp/day on fasting days. If I don’t get it, headaches are an issue.
I just went through that the other day. I had some precooked bacon in the fridge. One slice, and 5 min later the icky feeling was gone. I’m betting on electrolyte imbalance as well. You might need to increase your salt.
I think I was probably at more like 1 tsp of added salt. But I did fail to measure. I just added several pinches to herbal tea, I had about 4 cups of tea throughout the day.
try ketoade next time.
or try some good fat, see if you feel better … and keep fasting.