The world's shortest man measures only 21.5 inches.
73
The average sperm cell swims at 8 inches per hour.
4
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
A human being loses an average of 40 to 100 strands of hair a day.
133
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
Poor eyesight (myopia) is associated with higher IQ.
232
Early American humans hunted car-size armadillos and used their shells for houses.
12