15. Sneezing in Bright Light (Photic Sneeze Reflex)
Have you ever sneezed when stepping into the sun? This is the photic sneeze reflex, affecting about 18-35% of people. It’s an inherited quirk linked to a dominant gene, though scientists are still unraveling exactly how it works. If you find yourself sneezing at sudden brightness, you can thank your genes for this peculiar, harmless response. Learn more