When eating hot food I'd be just as concerned about the oesophagus. Seem to recall someone consuming a cold drink and having to have a large part of their oesophagus removed. I think they had serious problems with their stomach as well, but the oesophagus was hit first. Doubtless hot food, too hot food, will have a similar effect.
It's hard to imagine any water-based drink that could be cold enough to still flow and do that kind of damage to the esophagus. I wonder if it wasn't mostly alcohol chilled to a much lower freezing point than water.
I think one purpose of the sensing tissue at the periphery of the boat-race orifice is an immigration check for incoming items. I think one survival technique for testing food is to firstly rub a bit on one's lips. If it stings after due process of relevant time, it might be saver to look elsewhere for food. So, if it's too hot for the lips, it's too hot, I'd say.
Since we're the only animal that cooks its food, I wonder if we've developed any other evolutionary traits that help us deal with hot food. I like the lip-testing concept. The lips are tougher but more sensitive than the tissue in the mouth and esophagus, and make a good guide for what will burn and what won't.
I would imagine there must be an upper limit to how hot most common foods get. You may cook meat at 500F, but chances are you're not going to take the meat itself much past 200F without destroying it.
The lap top was on my "stomach" and I was laying flat on the floor with a pillow over my head in this position.
The emphasis and the emoticon allude to a misunderstanding on my part, but I still say the warmth would be unlikely to make any muscles cramp up. I avoided questioning the whole "laptop on my stomach" vs "pillow over my head" dichotomy, and will defend that decision rigorously. I sense there is still much I don't know about your "stomach" .
Do you think that some people can be intolerant of any sort of heat???
I used to place warm pads on my stomach some time back just because it felt good, I always bath in nice hot water, I have a thing for warm things, but maybe some people's bodies can work backwards?
I know for one I cannot stand the cold! BUT! I love seeing the snow, its is incredible to see..
Absolutely, but you don't sound like one of them.
I don't want to deviate too much farther from the OP, but there are gender-specific problems that can cause cramping of the stomach in women. That may not be the case with you, but it deserves a mention.