You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
The human sigh acts as a physiological reset button.
23
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
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
There are about 1,400 different species of bacteria in your belly button.
10