During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
The skin on your lips is 200 times more sensitive than your fingertips.
345
Sitting straight upright in your chair is bad for your back. You should instead slouch at an angle of 135 degrees.
10
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
35,000 people in the U.S. will die from the flu annually.
6
A woman's sense of smell is most sensitive during ovulation.
34
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 study in the UK states that men need at least two "guys nights out" each week to stay healthy.
5