The human brain is more active during sleep than during the day.
28
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Human hair and fingernails continue to grow after death.
7
On average a woman has 4 sexual partners in her lifetime.
-143
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The human brain has the capacity to store everything that you experience.
4k
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22