An animated TED-Ed lesson by John Cameron explains why and how humans hiccup. Although there’s not definite purpose to why humans hiccup, the video handles some possible explanations and the evolutionary history of the involuntary reaction.
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.