Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
A man's beard grows fastest when he anticipates sex.
239
It takes approximately 12 hours for food to entirely digest.
93
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
94
The human body contains over a billion miles of DNA.
147
Obsessive nose picking is called Rhinotillexomania.
101