One human hair can support 3 ounces.
191
There are about 1,400 different species of bacteria in your belly button.
10
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
Your heart will pump about 212 million liters in its lifetime.
26
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
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
In one day, adult lungs move about 10,000 litres of air.
11
If you are cold you are more likely to be hungry because you use energy to keep warm.
143