Why Are We Warm Blooded

PBS Member Stations rely on viewers like you. To support your local station, go to: More info and sources below Were on PATREON Join the community SUBSCRIBE so you dont miss a video A human with the metabolism of a hummingbird would need to eat about 80, 000 calories a day to survive. Thats 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 arent we coldblooded like crocodiles Heres the science br, br,