Have you ever wondered what is happening when you hiccup? There are two parts to a hiccup. The first is an involuntary movement of your diaphragm. The diaphragm is a muscle at the base of your lungs. It is the main muscle used for breathing. The second part of a hiccup is a quick closing of your vocal cords. This is what causes the "hic" sound you make.Hiccups can start and stop for no obvious reason. But they often happen when something irritates your diaphragm, such asEating too quicklyEating too muchEating hot or spicy foodsDrinking alcoholDrinking carbonated drinksDiseases that irritate the nerves that control the diaphragmFeeling nervous or excitedA bloated stomachCertain medicinesAbdominal surgeryMetabolic disordersCentral nervous system disordersHiccups usually go away on their own after a few minutes. You have probably heard different suggestions about how to cure hiccups. There is no proof that they work, but they are not harmful, so you could try them. They includeBreathing into a paper bagDrinking or sipping a glass of cold waterHolding your breathGargling with ice waterSome people have chronic hiccups. This means that the hiccups last more than a few days or keep coming back. Chronic hiccups can interfere with your sleep, eating, drinking, and talking. If you have chronic hiccups, contact your health care provider. If you have a condition that is causing the hiccups, treating that condition may help. Otherwise, treatment options include medicines, surgery, and other procedures.