Your wounds heal faster if you lick them, you instinctively do this for that reason. Tears help, too.
20
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Your heart will pump about 212 million liters in its lifetime.
26
Pain travels through the body at 350 feet per second!
23
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Your ears secrete more earwax when you are afraid than when you aren't.
229