On average, there's 100 billion neurons in the human brain.
83
The average sperm cell swims at 8 inches per hour.
4
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
A man's beard grows fastest when he anticipates sex.
239
Pain occurs when sounds are above 130 db.
124
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11