Your Brain Consumes A Fifth Of Your Body's Oxygen And Calories.

Despite making up only about 2% of your body weight, the brain is an incredibly energy-intensive organ. This high demand fuels its complex functions, from thinking and memory to controlling all bodily processes, even during sleep.

Source

https://www.brainfacts.org/brain-anatomy-and-function/anatomy/2019/the-energy-demands-of-the-brain-071819

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Published: March 26, 2026
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Biology Brain Science Human Body Metabolism Neuroscience Human Anatomy Energy Consumption

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