Jasmine Rice
According to the American Journal of Clinical Nutrition, jasmine rice has a high glycemic index which allows for a gradual release of glucose into the bloodstream. It also increases the production of tryptophan and serotonin into the blood.
When you eat it is not just your stomach that has to produce acid, that just breaks some things and kill some bacteria, mostly protein based.
Most organs will start working and produce different things, either to be used by other organs or to go directly to the intestines for further breakdown of materials required for all kinds of purposes, like acidic bile from the gall bladder.
The enzymes from the pancreas, The liver creates glycogen from sugars and carbohydrates and is also responsible for a large variety of functions such as process toxins with amino acids or transform proteins into other types of proteins needed by the system.
So yeah, when gramma said you shouldn't try to swim after eating.. she was kinda right.. with the resources being focused on digestion, your body can either get cramps on muscles or simply revert the digestion tasks and call a vomit, bc its too hard to do attend for the muscles immediate attention producing carbonized gas and lactic acid, both toxic, and attend the organs at the same time.