Your brain is metabolically expensive

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A note for Lesson no. 5, "Your Brain Secretly Works With Other Brains," in Seven and a Half Lessons About the Brain by Lisa Feldman Barrett.
Some context from page 95‌‌ is:

Your brain already burns 20 percent of your body’s entire metabolic budget, making it the most “expensive” organ in your body...

See these references.[1][2]


  1. Raichle, Marcus E. 2010. “Two Views of Brain Function.” Trends in Cognitive Science 14 (4): 180–190.
  2. Sterling, Peter and Simon Laughlin. 2015. Principles of Neural Design. Cambridge MA: MIT Press.