A man's beard grows fastest when he anticipates sex.
239
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Enamel is hardest substance in the human body.
61
A human being loses an average of 40 to 100 strands of hair a day.
133
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
It takes approximately 12 hours for food to entirely digest.
93
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
On average, there's 100 billion neurons in the human brain.
83