A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
One human hair can support 3 ounces.
191
In one day, adult lungs move about 10,000 litres of air.
11
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
Yawns are more contagious among people with closer relationships.
163
The human eye blinks an average of 4,200,000 times a year.
233
By weight, Bone is five times stronger than steel.
417
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191