The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
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
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
