A member asked:

Please tell me the biological purpose of a hiccup & a yawn?

A doctor has provided 1 answer
Dr. Michael Sanders answered

Specializes in Pulmonology

Not sure: I don't think there is a biological purpose to hiccups - it is just a spasm of the diaphragm. As for a yawn, it most often occurs when your sleepy, but I believe it is more related to the nervous system that to the respiratory system.

Answered 5/5/2017

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Could you tell me what are some leads to of the hiccups, if any?

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