The average sperm cell swims at 8 inches per hour.
4
A man's beard grows fastest when he anticipates sex.
239
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Babies crawl an average of 200m a day.
212
Only humans shed emotional tears.
331