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Lexie explains that the human body contains gold: it absorbs this mineral from the foods eaten.

Lexie explains that human hair is one of the strongest fibers on the planet. A healthy hair is as strong as a copper wire of the same diameter

Lexie explains that the taste buds that detect the flavor of food are not all found on the tongue; they are hidden everywhere in the mouth.

Lexie explains that newborns are able to drink and breathe at the same time as their larynx and higher in the throat that an adult.

Lexie explains that when the tongue is dry, it does not taste anything.

Lexie explains that beard hair grows faster than any other hair of the human body.

Lexie explains that, as with fingerprints, every human being has a different tongue print that makes it possible to identify him.

Lexie explains that the nails of the hands grow faster than the nails of the feet.

Lexie explains that the surface of the lungs and their alveoli is as big as a tennis court.

Food gives energy to the body and allows it to work well, even when sleeping!

Lexie explains that it takes a lot of concentration to sneeze with open eyes.

Lexie explains that children have fewer teeth than adults.

Lexie explains that the heart produces electricity, which makes it beat and pump the blood into the body.

Lexie explains how plaque and cavities are formed on teeth.

Lexie explains the formation of teeth in a child, from its development in the belly of his mother.