You mostly breathe from only one nostril at a time!
75
We are born with 350 bones, and die with 206.
135
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Flu shots only work about 70% of the time.
18
There are about 1,400 different species of bacteria in your belly button.
10
Only 1% of bacteria cause disease in humans!
2
The skin on your lips is 200 times more sensitive than your fingertips.
345
Crushed cockroaches can be applied to a stinging wound to help relieve the pain.
31