Human beings are the only living things which sleep on their backs.
ESTÁS LEYENDO
Human Body Facts
No FicciónHave you ever wanted to know more about the Human Body? Have you ever wondered how much blood your heat pumps or wondered what's more sensitive than your fingers? This will take you on an adventure through the Human body in which you've never expect...
Humans
Human beings are the only living things which sleep on their backs.
