The human body contains over a billion miles of DNA.
147
The human brain doesn't stop developing until about 25 years old.
102
Your fingernails grow faster in summer.
744
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
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191