You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59
There's 100 trillion good bacteria living in your body.
17
The human body contains over a billion miles of DNA.
147
In 1996, research found that having excessive body hair is linked to higher intelligence.
23