Most cases occur due to unknown causes. At other times, a bout may be caused by spicy or hot food, carbonated drinks like soda, nervousness, intense emotions, sudden laughter, fumes, or cold air

A hiccup is an unintentional contraction of your diaphragm — the muscle that separates your chest from your abdomen and plays an important role in breathing. This contraction makes your vocal cords

Eating spicy food Eating a large meal Drinking too many carbonated beverages Swallowing excessive air Drinking alcohol Sudden temperature changes Tobacco use Sudden excit

From a physical standpoint, hiccups are caused by uncontrolled spasms of the diaphragm. Each spasm causes quick intake of breath, which makes a hiccup. The phrenic nerve, which controls the diaphragm,