![]() ![]() One reason for the range: The guys at MythBusters are much larger, and therefore will have more forceful sneezes, than the slim volunteers the Singapore researchers used. And when MythBusters hosts Jamie Hyneman and Adam Savage took on the challenge of measuring a sneeze, they saw nothing faster than 35 mph. A study by a team of scientists in Singapore found that sneezes travel at a rate up to 10 mph. In the 1950s, Harvard biologist William Firth Wells estimated that a sneeze could travel as fast as 100 meters per second-that's 224 mph! While Wells's estimation now appears to be quite exaggerated, sneezes do move with some force. The velocity of a sneeze might surprise you. (Check out these other weird things that can happen after sex.)ģ. Researchers aren't totally sure why it occurs, but they believe it has something to do with the parasympathetic nervous system, which regulates things like heart rate, digestion, and the tissues and fluids connected with arousal. Yep, sneezing post-sex happens more than you'd think. (Here are more uncontrollable body quirks, explained.) Some theorize that it's an anomaly in the parasympathetic nervous system, others say it's a leftover trait from a stage of evolution, and a 2010 study out of Switzerland suggests that the brains of people who have it are just more easily excited than most. Only a handful of studies even exist concerning ACHOO, so it's no big surprise that scientists aren't sure exactly what causes it. Scientists estimate the condition affects between 10 and 35% of the population, but since it doesn't really do any harm, it hasn't been well studied. ![]() And not just the sun-any bright light can set off a chain reaction of sneezes for someone with ACHOO. "ACHOO" isn't just the sound you make when you sneeze-it's also the acronym for a not-so-rare sneezing syndrome officially called autosomal dominant compulsive helio-ophthalmic outbursts of sneezing, which describes the phenomenon of sneezing when you look at the sun. CSA Images/Printstock Collection/Getty Images ![]()
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