Actually it is because Europeans used to think the soul tries to leave the body during a sneeze. They probably did not know the heart stops then.

Tim McCormick

over 7 years ago

Lol I don’t know about that.. I’ve heard it’s because a sneeze was a common first sign of contracting the Plague. This resulted in people saying “bless you” because you were probably going to die. If the heart doesn’t stop for a millisecond when someone is shot or stabbed I have a hard time believing it stops when I sneeze