If you suffer from heartburn, bloat, and other summer time digestive problems these are due to the high temperatures rerouting the blood from the intestines to the skin. The stomach then can not produce key digestive enzymes thus the discomfort. A simple fix is to include a snack that contains 1/2 teaspoon of mustard! Your tummy should feel better in about 20 minutes. Why? The compounds in mustard stimulate the stomach and aid digestion to breakdown and absorb food.