Stress
Frequent or regular short bouts of hiccup could be a natural reaction of your body to emotional excitement or stress. This is mainly because these conditions would occur unexpectedly and change your breathing patterns. As a result, air will be pulled into your lung with shut vocal cords, which result in hiccups. Also, they can affect the nerves which go to your diaphragm, leading to short-lasting and harmless spasms, another cause of hiccups. Fortunately, it is simple to alleviate this cause with some OTC drugs, doing daily exercises, or having enough sleep. [6]
