There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
A human being loses an average of 40 to 100 strands of hair a day.
133
Only humans shed emotional tears.
331
Every human spent about half an hour as a single cell.
144
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
The human brain uses approximately as much energy as a 10 watt light bulb.
120
In one day, adult lungs move about 10,000 litres of air.
11
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456