About 400 different kinds of microbes live on and in the human body.
-3
Men have larger hearts; women's hearts beat faster.
77
It has been shown that caffeine causes headaches when stopped suddenly and can cause morning headaches that are relieved by a dose of caffeine.
101
The average human body contains enough iron to make a small nail.
50
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
The average person can live for eleven days without water, assuming an average temperature of 60 degrees fahrenheit.
15
Lack of water is the #1 trigger of daytime fatigue.
148
Your stomach produces a new layer of mucus every two weeks so that it doesn't digest itself.
160