Yawns are more contagious among people with closer relationships.
163
Our brains have a negativity bias and will remember bad memories more than good ones.
15
One human hair can support 3 ounces.
191
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
Babies crawl an average of 200m a day.
212
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32