Reflex phrases matter in real life. When someone sneezes, what do English speakers commonly say?

"Bless you!" is the customary phrase English speakers say when someone sneezes, a small social reflex so ingrained that most speakers say it automatically without thinking about its origin. Historically, the phrase is tied to old beliefs that a sneeze could expel one's soul or invite illness, making the blessing a protective wish.

"Congratulations!" celebrates an achievement and "Good luck!" wishes success ahead of an event, neither of which relates to the bodily reflex of sneezing, making both inappropriate responses to this everyday situation.

Nearly every culture has some verbal reflex tied to sneezing, though the exact wording differs — some languages wish good health directly, others invoke blessings, reflecting how widespread the old superstition about sneezing and vulnerability once was across human societies.