Take a litre of water. Stir in eight teaspoons of
sugar and one
teaspoon of
salt. Drink.
In the Third World, this stuff is very useful for preventing death by dehydration caused by diarrhea, as in cases of cholera or dysentery. In the industrialized world, it's more often used to prevent hangovers. Gatorade is basically ORS with coloring and flavoring added.