16 surprising facts about the human body that you might not know!

It's time to take a look at our amazing (and a little weird!)! Discover these 15 fascinating facts about our body ...

1- Your mouth produces about a liter of saliva per day! Your brain is sometimes more active when you are asleep than when you are awake.

2- Surrounded from end to end, the blood vessels of an adult could surround the earth's equator four times!

3- The word "muscle" comes from the Latin word which means "little mouse", what the ancient Romans looked like with flexing bicep muscles.

4- Bodies give off a tiny amount of light too weak to be seen by the eyes.

5- The average person has 67 different species of bacteria in their navel.

6- You lose around 4 kg of skin cells every year!

7- Babies don't cry until they are at least one month old.

8- The information is advancing on the nerves at around 400 km / h!

9- The human heart beats more than three billion times in an average life.

10- Did you know that we have a FREE downloadable main resource on the human heart? Great for teachers, home students, and parents!

11- Your left lung is about 10% smaller than your right lung.

12- Human teeth are as strong as shark teeth.

13- Scientists estimate that the nose can recognize a trillion different scents!

14- Humans are the only known species to blush.

15. Your blood makes up about eight percent of your body weight.

16- People with these dimples would reach orgasm more easily, thanks to better blood circulation in the pelvis.