John Cameron: Why do we hiccup?

The longest recorded case of hiccups lasted for 68 years ... and was caused by a falling hog. While that level of severity is extremely uncommon, most of us are no stranger to an occasional case of the hiccups. But what causes these 'hics' in the first place? John Cameron takes us into the diaphragm to find out. [Directed by Black Powder Design, narrated by Addison Anderson].

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