Wearing headphones for an hour increases the bacteria in your ear 700 times.
233
On average, there's 100 billion neurons in the human brain.
83
The skin on your lips is 200 times more sensitive than your fingertips.
345
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Putting sugar on a wound or cut will greatly reduce pain and speed up the healing process.
25
There are 206 bones in the human body!
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