A man's beard grows fastest when he anticipates sex.
239
On average, there's 100 billion neurons in the human brain.
83
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
The average person will go on a date at least 100 times before they finally marry.
33
Your heart will pump about 212 million liters in its lifetime.
26
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Yawns are more contagious among people with closer relationships.
163