How good is your knowledge about your own body? If you had studied about human body in lower classes, then you know basic things about it. But I bet you might not be knowing these mysterious facts about human body.
More than the outside appearance of a human body, there are plenty of interesting facts to be known about it. Things like ‘Why we are having different blood types’, or ‘why do we have finger prints’, are still remaining as mysterious things for many of us out there.