Tigers can see 6 times better at night than humans.
305
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Babies crawl an average of 200m a day.
212
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
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