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How much of our brain do we use at once?

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If you've ever believed in the 10% brain myth, you might be surprised to learn that human beings use virtually every part of their brains. Moreover, over the course of an average day, humans use nearly 100% of their brains. Researchers who have studied the brain with magnetic resonance imaging (MRI) technology have found that there are no dormant parts of the brain. In fact, most of your brain is active almost all of the time. read more

"Let's put it this way: the brain represents three percent of the body's weight and uses 20 percent of the body's energy." So that settles it, once and for all—with all due respect to Mr. Freeman, who shouldn't take this debunking personally. read more

Sure, some parts of your brain are working harder than others at any given time. But 90 percent of your brain isn’t useless filler. Magnetic resonance imaging shows that most of the human brain is active most of the time. In the course of a day, you use just about every part of your brain. read more

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