Usually, the 160,000 kilometers of blood vessels in your body work incredibly smoothly. However, the forces of age, weight gain, and gravity can conspire to cause lumpy varicose veins.
Hosted by: Michael Aranda
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
Dooblydoo thanks go to the following Patreon supporters—we couldn't make SciShow without them! Shout out to Jeremy Peng, Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Benny, Kyle Anderson, Tim Curwick, Scott Satovsky Jr, Will and Sonja Marple, Philippe von Bergen, Bella Nash, Bryce Daifuku, Chris Peters, Saul, Patrick D. Ashmore, Charles George, Bader AlGhamdi
Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow
Looking for SciShow elsewhere on the internet?