10 Facts That Should be Common Knowledge

#7.       The blood inside your blood vessels isn’t blue

The blood inside your blood vessels isn’t blue

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We didn’t think you would actually believe that the colour of blood inside your blood vessels is blue. But just to be on the safer side, it appears blue on the outside because that’s how light interacts with your skin and makes the red blood appear blue. Physics people!

#8.       Humans do use 100% of their brain

Just not all at the same time because that could lead to seizures.

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