Can you sneeze in your sleep? © iStock

Can you sneeze in your sleep?

We'll save you the effort of recording yourself overnight and then listening to the full eight hours in the morning.

Asked by: Seonaid Johnston, Perth

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Even if an insect crawled across your nose,you probably wouldn’t sneeze while dreaming. During REM sleep (the phase where dreams take place), your muscles are paralysed so that you don’t thrash around and hurt yourself. This paralysis extends to reflex muscle contractions, so you can’t sneeze while you are dreaming. In non-REM sleep your muscles are free to move again but the trigeminal motor neurones responsible for triggering a sneeze are still suppressed. It is just about possible to sneeze during this non-REM sleep, but the exertion will normally wake you up.


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