Why Does Getting Kicked in the Groin Hurt SO Much?

Getting kicked anywhere hurts, but getting kicked in the groin REALLY hurts for a few different reasons. 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: Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, D.A. Noe, Charles Southerland, Fatima Iqbal, Sultan Alkhulaifi, Nicholas Smith, Tim Curwick, Alexander Wadsworth, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George ---------- 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: http://mentalfloss.com/article/31182/why-does-getting-hit-testicles-hurt-so-much https://www.ncbi.nlm.nih.gov/pubmedhealth/PMHT0024363/ http://www.msdmanuals.com/en-au/home/women-s-health-issues/biology-of-the-female-reproductive-system/female-external-genital-organs https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2964977/ https://www.ncbi.nlm.nih.gov/pubmed/23196 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327510/ https://canvas.brown.edu/courses/851434/pages/neural-circuits http://www.d.umn.edu/~jfitzake/Lectures/DMED/Somatosensation/Somatosensation/ReferredPain.html https://www.researchgate.net/publication/297738179_Convergent_referred_pain_mechanisms http://www.paincenter.pitt.edu/sites/default/files/documents/Craigpainreview.pdf ----------- Images: https://en.wikipedia.org/wiki/Jockstrap#/media/File:Cricket-Abdominal-Guard.png https://en.wikipedia.org/wiki/Sensory_neuron#/media/File:Structure_of_sensory_system_(4_models)_E.PNG https://commons.wikimedia.org/wiki/File:1506_Referred_Pain_Chart.jpg