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8. Mental Fitness > 72. Overclock Your Brain

Overclock Your Brain

In some situations, the brain is performance-limited by the available fuel. Increase the fuel and you can temporarily get a performance boost.

The brain is one of the most energy-hungry of the human organs. Despite making up only about 2% of the average body weight, it uses almost 20% of the normal intake of energy. Although the brain comprises mostly fat, this is mainly used to protect and insulate brain cells and is not available as an energy store. It therefore relies on the rest of the body to provide it with a supply of energy, which consists almost entirely of glucose. The brain uses up its own glucose supplies in about 5–10 minutes if they are not replenished, meaning it is particularly sensitive to changes in blood glucose levels.


  

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