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Why are we warm blooded?

Being warm-blooded is a defining trait of humanity, yet it comes at a massive biological cost. In this video, we explain why mammals evolved to generate their own body heat and the surprising advantages that made this expensive adaptation worth the price. Why Are We Warm-Blooded? The Surprising Evolutionary History | Simple Things Surprising Histories This documentary style episode from Simple Things Surprising Histories covers the fascinating evolutionary journey of endothermy, explaining why mammals pay a high caloric price to maintain a constant body temperature. Topics covered in this video: • What it means to be warm-blooded (endothermy) vs. cold-blooded (ectothermy) • The high metabolic cost of being a mammal • The Aerobic Capacity Model and the need for stamina • How warm blood allowed ancestors to hunt and run longer • The "Nocturnal Bottleneck" theory: Surviving the age of dinosaurs • The "Fungal Filter" theory: How body heat protects us from disease • Why mammals survived the asteroid impact that killed the reptiles • The evolutionary trade-offs of human metabolism Chapters: 00:00 - INTRO: The Expensive Engine 01:09 - CHAPTER 1: The Need for Speed 01:57 - CHAPTER 2: The Night Shift 02:45 - CHAPTER 3: The Invisible Enemy 03:48 - OUTRO: The Cost of Living This video is designed for students, educators, and general audiences who want a clear explanation of mammalian evolution without unnecessary complexity. All explanations are factual, educational, and suitable for learning purposes. If you are searching for: why are humans warm blooded warm blooded vs cold blooded explained evolution of endothermy mammalian evolution history aerobic capacity model nocturnal bottleneck theory fungal filter hypothesis biology documentaries evolutionary science explained, this video provides a complete and accurate overview. #WarmBlooded #Evolution #Biology #Mammals #ScienceExplained #EducationalDocumentary #sciencefacts #sciencedocumentary #simplethings #simplethingssurprisinghistories Resources: By Artwork by Mark Witton. Steven C. Sweetman, Grant Smith, and David M. Martill - http://app.pan.pl/article/item/app004..., CC BY 2.0, https://commons.wikimedia.org/w/index... By Ghedoghedo - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index...