If you happen to like our videos and hav→→Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1 Never run out of things to say at the water cooler with TodayIFoundOut! Brand new videos 7 days a week! More from TodayIFoundOut: How Do They Make White Gold White Given That It's an Element? https://youtu.be/kzy2uJj2NKA In this video: The full explanation of how and why our fingers wrinkle in wet environments is still the subject of some debate. What we know is that the physiological mechanisms causing this phenomenon are the result of our veins constricting (vasoconstriction) in your hands and feet. One might notice this occurs even in warm water, when we otherwise would assume blood vessels should dilate instead of constrict. Want the text version?: http://www.todayifoundout.com/index.php/2014/03/skin-wrinkles-water/ Sources: http://www.theguardian.com/science/2013/jan/09/skin-wrinkle-water-grip http://www.nature.com/news/science-gets-a-grip-on-wrinkly-fingers-1.12175 http://www.ncbi.nlm.nih.gov/pubmed/15095056 http://www.ncbi.nlm.nih.gov/pubmed/12635117 http://orthopedics.about.com/od/fingerconditions/f/Fingers-Wrinkle.htm http://vixra.org/pdf/1309.0006v2.pdf