35,000 people in the U.S. will die from the flu annually.
6
When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
30
The smallest human penis ever recorded was just 5/8 of an inch long!
77
About 400 different kinds of microbes live on and in the human body.
-3
The human brain uses approximately as much energy as a 10 watt light bulb.
120
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
The average tastebud lives only 10 days before it dies and is replaced by a new one.
15