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Amazing Human Brain Facts Actually Based On Science

1. Although the human brain only amounts to 1/50th of total body weight, it consumes 1/5th of total energy and oxygen reserves.

2. Just like the rest of your body, the human brain is mostly made of water – about three quarters to be exact.

3. Even a minute level of dehydration can seriously impact the way your brain functions. Even a 2 percent drop in hydration levels can make it difficult to retain memory function.

3. Did you know that your brain shrinks with age? Your brain can also shrink considerably after sweating during a workout – but it’s only temporary.

4. A typical brain weighs around 3 pounds – about the same as an average toaster.

5. Your brain actually contains the most fat of any organ in your body, with two thirds dry weight amounting to fat.

6. In addition to storing a lot of fat, the brain also contains about a quarter of the body’s cholesterol. Cholesterol is very important to brain function.

7. With a very rough estimate of 86 billion cells, the human brain contains about as many cells as there are stars in one quadrant of the Milky Way galaxy.

8. Brain neurons are incredibly productive, and they’re capable of emitting 1,000 nerve impulses per second. They can also connect with tens of thousands of other neurons.

9. If it were a piece of your brain, a grain of sand would contain 100,000 neurons and 1 billion synapses.

10. Each brain cell is completely unique.



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