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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 ↓Uploaded 04-05-21We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmartSUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_subA 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 scienceReferences: https://sites.google.com/view/warm-blooded-references/home -----------Big Thank you to our Brain Trust Patrons:AlecZeroAmy SowadaAndrew Campbell Baerbel WinklerBenjamin TeinbyBrian Changdani bowmanDavid JohnstonDustinEric MeerJavier SotoKaren HaskellMarcus TuepkerPeter EhrnstromRobert YoungRoy LasrisSalih ArslanZenimalJoin us on Patreon! https://patreon.com/itsokaytobesmartTwitter http://www.twitter.com/DrJoeHansonhttp://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merchhttps://store.dftba.com/collections/its-okay-to-be-smartFacebookhttps://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices
