"Surprising Body Functions You Never Knew Were Uncommon"

BuzzFeed readers share 19 unusual things their bodies do that they didn't know were not normal, including hiccupping when a specific area on the chin is pressed, having an allergy to stone fruit, experiencing coughing and gagging when something is put in the ear, sneezing in bright light, having a retroverted uterus, getting hot knees, experiencing sharp shooting pains down the limbs, having a paradoxical response to medications, experiencing synesthesia with color associations, itching ear canals during pressure changes, feeling physical pain when witnessing others being hurt, vomiting when laughing too hard, being able to control dreams, absence of arm and leg hair due to a genetic blood condition, being able to focus and unfocus eyes on command, sneezing when cold, having an unusually long large intestine, being able to rumble ears on command, and not having an internal monologue.