The human brain doesn't stop developing until about 25 years old.
102
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
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
Held in farts enter your bloodstream and are bad for your body.
26
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62