→Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1 →How "’’re breathing cold air though, the rate of mucus production goes up significantly, causing some of that snot to come out the front of your nose, rather than back in your throat. Want the text version?: http://www.todayifoundout.com/index.php/2011/10/why-your-nose-gets-runny-when-it-is-cold/ Sources: http://www.wisegeek.com/why-does-my-nose-run-when-it-is-cold-outside.htm http://kidshealth.org/kid/talk/qa/nose_run.html http://familydoctormag.com/colds-and-flu/40-why-your-nose-runs.html http://en.wikipedia.org/wiki/Human_nose http://kosmicamusic.com/wp/2008/04/24/the-common-cold-natural-ayurvedic-treatments/