There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
The human eye blinks an average of 4,200,000 times a year.
233
It takes about 20 seconds for a red blood cell to circle the whole body.
102
In one day, adult lungs move about 10,000 litres of air.
11
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
Your fingernails grow faster in summer.
744
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89