Yeah, I thought you might be hinting at the stomach issues thing, which a lot of folks deal with. At least at first. … A lot of time this happens when food is introduced, and I honestly believe it’s simply a shock to the system, after not having food in there for a while. … But as mentioned above, I too have done a small salad, and waited 30-60 minutes before eating a full meal. But I’ve done this with other stuff too.
Plus, along with the things already mentioned (Nuts, Eggs, etc.) I find that something with a lot of fat, such as on meats, or just greasiness will also cause the stomach dump. I also think the more you fast, you might see this less often. (as they say, building the Fasting muscle) As I said, most times for me, any Fast under 48 hrs. doesn’t seem to bother me regardless how I break. But once I go beyond that threshold I will definitely watch the items I will break with. Again, sadly, we all have to find what works for each of us. Some will find certain foods that will almost always trigger it, but once you find out what does cause this, simply remove it from the equation and try other things. But maybe just eating a smaller amount and waiting an hour, may help even more? This can be 2 or 3 bites…
I basically think the introduction of anything in a smaller portion really seems to help folks the most. I’ve even snacked on Pumpkin Seeds (slowly) for an hour before a meal, and no issues? Not a lot & eating just a few every few minutes, to maybe jumpstart the system before fueling it up completely. So you will have to do some trial and error to find out what works best, but we’ve all been there at some point. And some even say it bothers them for days when it happens. - For me, even when it does happen, its only 2 or 3 trips within the first couple hours, then done. But some have reported having the issue last for 2 or 3 days, or more. I can really see that being a problem, and one I wouldn’t want for anyone.
Is there a timeframe you go beyond, when you are seeing this the most? - For me personally, I see IF as anything up to 24 hrs. (OMAD) And anything over 24hrs. as being considered EF. But again, this is just my opinion on it. If you are seeing this on smaller IF’s, or just slightly over that 24, it may just be your system not being used to Fasting, but that should change, and probably not too long.