The average sperm cell swims at 8 inches per hour.
4
On average a woman has 4 sexual partners in her lifetime.
-143
The human sigh acts as a physiological reset button.
23
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
Every human spent about half an hour as a single cell.
144
Human hair and fingernails continue to grow after death.
7