It's an odd tradition in English-speaking countries to say "God bless you" whenever someone sneezes. There are various theories as to the origin. The reason I was given, when growing up, was because your heart stopped beating when you sneezed-this is false by the way! "Gesundheit," the German word for health makes more sense. It just doesn't roll off your tongue as easily as "God bless you" and to be perfectly honest, I never knew how to spell it until a few minutes ago. I think I'll stop here and just continue to rack up as many blessings as possible. I sneeze pretty darn often. I'm a blessed man.