One human hair can support 3 ounces.
191
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
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
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
If you hold farts in during the day, they'll just come out when you sleep.
16
In one day, adult lungs move about 10,000 litres of air.
11
Within three days of death, the enzymes that once digested your food begin to eat you.
22