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Explore Why Are We Warm-Blooded? with 3,001,429 views, 86,090 likes, and 2,292 comments. Experience the impact of this video content that has captured audience attention.

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub A human with the metabolism of a hummingbird would need to eat about 80,000 calories a day to survive. That’s because staying warm by making your own heat takes a ton of energy. And that brings up a paradox, because creating your own body heat is incredibly expensive. The largest animals on Earth have to spend most of their day just eating enough to keep their heat engines running. So why aren’t we cold-blooded… like crocodiles? Here’s the science References: https://sites.google.com/view/warm-blooded-references/home Be Smart explores science questions you didn't even know you wondered about. It is hosted and produced by Joe Hanson, PhD. We post new videos all the time, so please subscribe! If you enjoyed this video, hit the 'like' button, leave a comment, or watch another of our videos! CONNECT WITH ME ____________________________________ Website: https://www.itsokaytobesmart.com/ Instagram: https://www.instagram.com/okaytobesmart/ https://www.instagram.com/drjoehanson/ Facebook: https://www.facebook.com/itsokaytobesmart Patreon: https://www.patreon.com/c/itsokaytobesmart A big thanks to our Brain Trust patrons: AlecZero, Amy Sowada, Andrew Campbell, Baerbel Winkler, Benjamin Teinby, Brian Chang, dani bowman, David Johnston, Dustin, Eric Meer, Javier Soto, Karen Haskell, Marcus Tuepker, Peter Ehrnstrom, Robert Young, Roy Lasris, Salih Arslan, Zenimal SPONSORSHIP INQUIRIES ____________________________________ Please email [email protected] Stock video and images provided by Shutterstock, Artlist, and MotionArray Music provided by APM Written by Sarah Keartes & Joe Hanson Edited by Nicole Kopren Produced by Spotzen for PBS Digital Studios

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