Too much salt causes unbalanced electrolytes and can cause bloating and digestive issues. It’s happened to me and why I take these electrolyte fasting capsules that have 6 of the major electrolytes you need. Helps me EF’s. https://www.amazon.com/Extended-Electrolytes-Himalayan-B-Complex-Vitamins/dp/B08ZYWC5Q8/ref=sr_1_3?crid=2FKD6DJZI7GDB&keywords=reset+electrolytes&qid=1672797411&sprefix=Reset+%2Caps%2C209&sr=8-3
>I’ve been doing IF/OMAD for months now
>I’m currently 19hrs into my first long fast
You’ve had no similar issues on IF/OMAD? Have you been taking electrolytes?
My guess is overdoing the electrolytes. That seems to be the only variable. I typically don’t take electrolytes at all the first day I’m fasting.