how does a bright light help you sneeze
For these people, looking at a bright light is enough to make them sneeze. 1  To find out if you are one of these people, try limiting your exposure to light and closing your eyes. 2  After your eyes have acclimated to the darkness, open your eyes and swiftly turn on a bright light.
Researchers noted that the bright light's ability to make people feel warmer could have something to do with increasing the intensity of their emotions. We suggest that these effects arise because light underlies perception of heat, and perception of heat can trigger the hot emotional system, the study said.