Why can’t we burn more or less calories by working our brain when it already uses a fifth of our daily energy usage?

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Hello,

So my question is, our body uses a certain amount of energy through the day and 20% of that is used exclusively by the brain.

Why can’t we increase or decrease the calorie usage of our minds to burn more or less calories?

My own theory is that the brain runs on a base threshold of energy and it normally is around 20% but it doesn’t explain why doing brain teasers/puzzles doesn’t increase it.

And bonus if you can explain how doing extremely challenging problems for any amount of time makes you feel physically tired (such as taking a test).

Edit: there have been a amazing amount of answers while I was asleep (posted this before sleeping for a solid 10 hours), my questions about the brain functionality has been answered

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21 Answers

Anonymous 0 Comments

Your brain spends most of its time designing and interpreting reality, keeping your body working in the background, being aware and responsive to stimuli. Solving a math problem works your brain harder like drawing the math out in minecraft with minecraft blocks works your computer harder. 99% of the work is the baseline level of work.

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