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Hiccups can occur for a variety of reasons. These include eating too much, swallowing air while chewing, or even being anxious or excited. These same triggers can cause babies to hiccup, which is not usually a problem for a healthy child. Itâs easy for a baby to swallow some air while feeding, and extra air can increase the risk of hiccups. This is why itâs important to burp your baby to get the air out of their tummy. Air in the tummy can also make babies uncomfortable and may cause them to spit up.
Hiccups are due to the involuntary contraction of the diaphragm muscle. This causes you to inhale suddenly, followed by a reflex shutting of the epiglottis, which makes the hic sound. Hiccups are stopped by stimulating the vagus nerve to the diaphragm, such as by drinking water upside down.