OK, if the speed of a sneeze is 100MPR, do the obstructions in the nose slow things down or increase the speed
454980
Actually, that would depend on the amount and size of the obstructions.  When you restrict the flow of something then yes you increase the "speed" of the "something".  You can reach a point where the constriction will actually slow the "air" down.  The "air" going through the smaller constriction will be faster, however, there will be a smaller amount of "air" going through.  Don't know if that made any sense or not.  ?  *hugs* :)
358753
Mechanism of sneezing - Normally, sneezing is an involuntary reflex, which is controlled by a complex interaction of nerve fibres. A variety of receptor sites, situated in the nose, reports about the irritation or foreign substance to the brain for inducing sneezing by releasing histamine, for clearing the nose. Receptors are sensitive to infection, touch, smells of dust, chemical gases, fumes, temperature and exposure to extreme cold air and water (the main offender). Usually, sneeze begins with a deep inspiration and closed glottis, which suddenly opens after gaining pressure from contraction of the diaphragm, abdomen muscles and other muscles which compress the lungs to let out the trapped air with force through nose and mouth. So with an explosive sound, throw of air occurs as a sneeze. Sneezing also involves contraction of the muscles of face, neck and eyes. Sometimes, sneezing air speed is measured more than 120 km/per hour. Normally, people sneeze once or twice during early morning or daytime to clear the nose.\n\nFor more info, go to the source...
224264
Sorry, we don’t know why most people close their eyes when sneezing. Not all do. \n\nSome experts guess that we’ve evolved closing eyes to reduce sneeze spray landing in our eyes. However, our eyes are exposed constantly to bacteria and viruses and have good defenses without eye closing.\n\nClosing eyes (or keeping them open) is part of the sneeze reflex. It’s a reflex—meaning we have no conscious control of sneezes. Instead, the primitive part of the brain (called the medulla oblongata and located at the top of the spine) calls the shots. The reflex triggers major muscles of face, throat, and chest to fire out gunk going at 100 mph (150 kph) as fast as a pitcher’s fastball.\n\nMost people tighten the eye muscles, causing them to shut, as they tighten the other muscles involved in a sneeze. But not all do. Some sneeze with their eyes open. Either way, it’s part of the inborn sneeze reflex.\n\nIn 1888, Thomas Edison hit upon the idea of movies from looking at sequential pictures of someone sneezing
149715
It is almost impossible for a person to keep their eyelids open during a sneeze, although some rare individuals report having little if any trouble doing so.\n\nThe sneeze center makes all these muscles work in just the right order, to send that irritating particle out of your nose -- at speeds up to 100 mph
211862
I dont agree with the question to begin. It doest necessarily have to occur like this. Ive heard a lot of people sneeze and not everyone sneezes after them.
348729
I read something about it being impossible to sneeze with your eyes open. Even if you try your eyes would automatically close. I think they would pop out if they were taped open.
232297
A sneeze is the fastest known action that a human can perform.  It is involuntary and can make the head mover VERY sharply.  Maybe our eyes close so that we don't get anything in them when our head jerks forward?  Dust, leaves, branches, etc. would be both painful and dangerous if they got into our eyes while we were moving our head at high speed.\n\nAccording to Wikipedea:\nIt is almost impossible for a person to keep their eyelids open during a sneeze, although some rare individuals report having little if any trouble doing so. The reflex of shutting the eyes serves no obvious purpose: the nerves serving the eyes and the nose are closely related, and stimuli to the one often trigger some response in the other.
833166
At the same time?? I can't recall doing that, however I would have to say that if I were to sneeze and fart at the same time  while driving down I-95 the air would be going at least 65 M.P.H.
439582
It is said that all bodily functions stop when you sneeze... save the actual sneezing function itself. \n\nDon't know if this really answers your question, but it seemed applicable.\n\nHave a good one!\n\n-Jordan
352983
Yes. This is a very interesting question and have an answer everyone must know. \n\nWhenever we sneeze, our heart stops. This is the only time in the life (of a living person) when a heart stops. There has been a convention of different cultures around the world to welcome (or say welcome back) just after sneezing. These people don't know why we welcome the person who just sneezed. But the truth is that, he/she just came back from a situation between life and death.
46066
When sinus around your nose is releasing too much liquid to your nose, and block your air passage, the sneeze mechanism in your brain tells you to sneeze.
1161017
HCO3 is a natural buffer in your body.  Sneezing might be worst case, but be sure in the process of snorting the stuff it does not go down the lungs.  By the way, why would you want to do that?
158312
No. Blocking a sneeze does not kill brain cells, rather it can give you a stroke. Such a block has a high chance of raising the internal pressure of capillary brain vessels and cause a tear in them. If such thing occurs most of the time you need a surgery requiring opening the skull.
758125
A sternutation or, more commonly known, sneeze is a semi-autonomous, convulsive expulsion of air from the nose and mouth. This air can reach speeds of 70 m/s (250 km/h) and an unimpeded sneeze sends two to five thousand bacteria-filled droplets into the air\n\nThis was also interesting:\n\nFebruary 2002 - Your brain musters a host of muscles to clear irritants from your nose at speeds up to 100 mph.\n\nEver try to stop a sneeze? Not easy, is it?\n\nSneezing is a reflex. "When your nose itches you sneeze," just as your knee jerks when a doctor taps it, says California allergist William E. Berger, M.D., a member of the American College of Allergy, Asthma and Immunology. "Closing your eyes when you sneeze is also part of the reflex reaction."\n\nSneezing may seem simple, but it's more involved than you think. Here's how it works: Your nose often warns you a sneeze is coming. An irritant makes your nose start to itch or tickle.\n\nThen the part of your brain termed a "sneeze center" sends a message to designated muscles. "The signal from the brain tells our body to sneeze as a means of clearing out the irritating particles," says Dr. Berger.\n\nThe chest, abdomen, diaphragm, vocal cords, throat and eyelids join in a certain order to launch a sneeze. Presto -- your nose releases the irritant that's causing that itch. A sneeze propels particles from your nose at a speed of up to 100 miles per hour.\n\nSome particles sneak into your nose in a normal breath. A lot more come from colds or allergies. But the cause of your sneeze could also be bright sunshine.\n\nStrange as it sounds, bright light causes one out of three people to sneeze. Some doctors call them "photics," from the Greek meaning "of light." Photic sneezers can blame their parents -- you inherit this trait.\n\nIf your sneeze comes with chest congestion, headache, yellow or green nasal discharge, fever or a stuffy nose, you may want to see a doctor. You could have a cold or allergy.\n\nYou may be tempted to stop a sneeze. Don't.
789205
YA:\n-Cover your mouth and your nose\n- Sometimes hold your nose so you dont get this really loud sneeze!\n- And try not to make it noticable in public!\nHope i helped!
469034
Because otherwise some 'thing' in your eyes will get damaged by the fastness of a sneeze, and therefore the eyelids react with shutting when sneezing.\nDon't really remember more than that, I read it 3 years ago somewhere... :S
419888
hey read these scientific reasons why do people bless them:\n1- when you are sneezing the heart stop within it\n2- the sneeze's speed is 100 km&#92;h\n3- if you are sneezing hard maybe you will broke one rib of your body ribs\n4- if you block the sneeze maybe will happen blood throwback in the neck or the head then that will be your death\n5- if you lift your eyes opened within sneezing maybe they will be out of them place\n6- and for your knowledge :\n   within the sneeze all organ of body stop although the time of the sneeze a second or part of second\nthen if god (Allah ) wants you to live,he will let our organ work after stopped \nquestion to you : if don't believe in spirit what the thing let you live ,think and distinguish you from the animals?