A man's beard grows fastest when he anticipates sex.
239
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Babies crawl an average of 200m a day.
212
Your heart will pump about 212 million liters in its lifetime.
26
The human brain uses approximately as much energy as a 10 watt light bulb.
120
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
By weight, Bone is five times stronger than steel.
417
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