Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Your fingernails grow faster in summer.
744
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
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
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
The human brain uses approximately as much energy as a 10 watt light bulb.
120