Eli5: What happens when you sneeze? And why does it happen multiple times?

Question

I’m one of those weirdos that enjoys a good sneeze, but I don’t understand what happens when you sneeze. Why does our body react in such a way? And why do we have it built into our systems? And why do they often come in multiples?

In: 33

Answer 1

If I feel a sneeze coming on, I look at any bright light and all hell breaks loose, for a good minute or more.