A hard working adult sweats up to 4 gallons per day. Most of the sweat evaporates before a person realizes it's there, though!
25
The brain can stay alive for 4 to 6 minutes without oxygen. After that cells begin die.
193
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
About 400 different kinds of microbes live on and in the human body.
-3
The average female will have 3.3 pregnancies in her life.
49
Men get hiccups more often than women.
93
It takes 17 muscles to smile, 43 to frown.
65
Flu shots only work about 70% of the time.
18