Why do we sneeze?
?Sneezes happen when pollens or irritants affect the nasal lining. The body is trying to chuck the offending particle as far away from it as possible.
What goes on when we sneeze?
?Moments before the outburst, your chest muscles tighten and push air and droplets up and out.
?At the same time, your throat shuts, and the sneeze bursts out of your nose with incredible speed.
?The air and droplets flow out at a speed of up to 160 km per hour. This is way faster than the speed of a cough, which is about 80 km per hour.
?Usually, in one sneeze, there could be as many as 100,000 tiny little droplets. These droplets may contain as many as 12,000 different species of bacteria.
So why do we close our eyes when we sneeze?
? There are some things in the body that you can’t control by command. Some of them are your face twitching when you don’t mean to, or your eyes watering because they’re dry. Sneezing is another example.
?Basically, the eyes involuntarily shut in order to protect against bacteria getting back in. It’s the way your body “battens down the hatches,” to use sailor-speak.
?Closing the eyes when sneezing is a reflexive trait that has been developed in humans during thousands of generations.
? You could probably keep your eyes open during a sneeze, but it would be really hard to do and one would have to make a conscious effort to combat your reflexes!