Why Does Getting Water Up Your Nose Hurt So Much?

Jumping into a refreshingly cold body of water on a hot summer day can feel wonderful, except for your nose. Why does it hurt so much when you get water up your nose? We're conducting a survey of our viewers! If you have time, please give us feedback: https://www.surveymonkey.com/r/SciShowSurvey2017 Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطا الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Bella Nash, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://www.statnews.com/2016/04/21/boddities-hurt-get-water-nose/ https://www.npr.org/sections/health-shots/2011/08/19/139781956/hold-your-nose-to-avoid-brain-eating-amoebas https://www.webmd.com/allergies/features/neti-pot-nasal-irrigation-pros-and-cons https://well.blogs.nytimes.com/2012/09/03/rare-infection-prompts-neti-pot-warning/ http://www.sciencefocus.com/qa/how-much-salt-human-body https://www.ncbi.nlm.nih.gov/books/NBK21739/ Images: http://www.thinkstockphotos.com/image/stock-photo-cannonball/490075024 https://en.wikipedia.org/wiki/File:Jalaneti.JPG https://en.wikipedia.org/wiki/File:TE-Nose_diagram.svg https://commons.wikimedia.org/wiki/File:Nfowleri_LifeCycle.gif https://commons.wikimedia.org/wiki/File:Naegleria_fowleri_lifecycle_stages.JPG