In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
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.
21
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
One human hair can support 3 ounces.
191
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12