Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
There are about 1,400 different species of bacteria in your belly button.
10
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
The human body contains over a billion miles of DNA.
147
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73