Every time you sneeze some of your brain cells die.
113
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
You see your nose at all times, your brain just chooses to ignore it.
30
On average, there's 100 billion neurons in the human brain.
83
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
21
The average sperm cell swims at 8 inches per hour.
4
When you take a step, you are using up to 200 muscles.
886
