Therefore, the membranes don’t come into contact with any irritants as they do when we’re awake. Why can’t you sneeze in your sleep?Īlthough we should be more prone to sneezing while asleep- as our mucus membranes swell when we lie down- the reduction of airflow and movement while we sleep doesn’t stir up dust or other particles. Once stimulated, these muscles go to work and cause us to forcefully expel air from the mouth and nose. When something, say a piece of dust or a strong odor, stimulates nerve endings in the lining of the nose, the stimulus travels to the central nervous system and is then routed back to the muscles of the face, throat, and chest. Snatiation - This is a relatively rare genetic disorder that triggers sneezing during digestion after large meals.Ī sneeze is an uncontrollable physical response to an outside stimulus.Sudden light exposure can cause certain people to sneeze. Light - Only some people experience this, and it’s known as the photic sneeze reflex. Illness - Influenza, the common cold, and just feeling under the weather can trigger a sneeze.Foreign particles - These are non-allergens that can still irritate your nasal cavity and cause sneezing.Allergies - Hay fever or an allergy to pollen, mold, dander, or dust can trigger a sneeze.Some of the reasons why your body may trigger a sneeze are: While there are a variety of things that can trigger a sneeze, the act of sneezing itself is involuntary. Sneezing is your body’s natural response to stimulation, irritation, or light. In order to understand why it’s impossible to sneeze in your sleep, you’ll need to know why we sneeze in the first place. This means that even if you dream that you are sneezing, you won’t be able to sneeze for real. When we fall asleep, our bodies enter paralysis- which extends to our reflex actions. Sneezing is what’s known as a “reflex action.” To perform a reflex action, the brain requires a lot of activity and stimulation. Although no study has been conducted to confirm this, most sleep experts and neuroscientists agree that it just can’t happen. No- it’s supposedly impossible for humans to sneeze while they’re sleeping.
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