Held in farts enter your bloodstream and are bad for your body.
26
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
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
A person can live without food for about a month, but only about a week without water.
156
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
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.
22