On average, there's 100 billion neurons in the human brain.
83
A man's beard grows fastest when he anticipates sex.
239
Obsessive nose picking is called Rhinotillexomania.
101
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
The world's shortest man measures only 21.5 inches.
73