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Brains over body: Scientists say our brains are “selfish” when it comes to energy

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The phrase “brains over brawn” may actually be true. Science shows that in a scenario where an individual uses both at the same time, the brain receives much more energy than the muscles.

The “selfish brain” theory

Researchers found that if strenuous physical and cognitive efforts are exerted at the same time, the brain is at the top of the hierarchy in the distribution of nutrients. The brain is prioritized to receive blood glucose and oxygen, therefore inhibiting the amount of nutrients the skeletal muscles receive. In a situation where there is a limited or short supply of both blood glucose and oxygen, these muscles will be a very strong competing force against the brain.

The human body has evolved from the muscle-dependent “soldier” towards a more sedentary “diplomat.” In this day and age, our society needs a steady production of intellectuals that can perform complex cognitive functions, more than it needs a supply of physical laborers, since a lot of companies are now investing in machinery to do the heavy work. With difficult physical tasks come revolutionary inventions that address these problems, hence robots and machines. (Related: When Amazon warehouse workers complained of sore feet from walking too much, the company simply replaced them with 30,000 robots (and counting).)

When in full physical and cognitive strain, the brain receives more energy than the muscles. Researchers performed a series of tests on a rowing team to measure the output of the brain and the muscles’ performance when used together. The tests included rowing (on a rowing machine) and memory, which were measured individually, and then simultaneously.

https://www.naturalnews.com/2017-11-24-brains-over-body-scientists-say-our-brains-are-selfish-when-it-comes-to-energy.html

This could explain why some people feel energy rushes???

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