Only humans sleep on their backs.
The human brain is 80% water.sciensational.com
As an adult, you have more than 6 square metres (20 sq ft) of skin on your body — about the same are as a blanket for a queen-sized bed.
Everyone's tongue print is different.
In your lifetime, you'll shed over 18 kg (40 lb) of skin.
15 million blood cells are produced and destroyed in the human body every second.
The brain uses more than 25% of the oxygen used by the human body.sciensational.com
If your mouth was completely dry, you would not be able to distinguish the taste of anything.
There are more living organisms on the skin of a single human being than there are human beings on the surface of the earth.
The human body has enough fat to produce 7 bars of soap.
The human head is a quarter of our total length at birth, but only an eighth of our total length by the time we reach adulthood.
On an average, most people blink about 15,000 times in a 16-hour day (awake.)sciensational.com
Hummingbirds can't walk.
Moths have no stomach.
A starfish can turn its stomach inside out.
The animal with the largest brain in relation to its body is the ant.
The largest eggs in the world are laid by a shark.sciensational.com
A crocodile's tongue is attached to the roof of its mouth.
Crocodiles swallow stones to help them dive deeper.
Cheetahs can accelerate from 0 to 70 km/h in 3 seconds.