Drink milk prior to sleep... ...Then, the calcium in the milk will stimulate the release of "gastrin", a gastric hormone ("gaster" is stomach in Latin or old Greek, can't remember which)... ...Then, this gastrin will stimulate the acid secretion of the stomach in return... ...No good for that sleeping one, if is a sufferer of gastritis or duodenal ulcer..! Still, milk is the one and only..! :)