Originally Posted by sch

If she really guzzled 128oz of water, it is no wonder she felt
bloated, as it is hard for the stomach to empty at a rate
much faster than 32-40oz/hour and it likely wasn't empty to
start with. The 32+ emptying rate actually assumes optimal
electrolyte and sugar content in the liquid and plain water
empties at a slower rate. Two quarts or so sloshing around
in the stomach will make you feel bloated and she probably
had a mild electrolyte imbalance as well. Smaller people have
smaller stomachs to boot.