About 400 different kinds of microbes live on and in the human body.
-3
There's 100 trillion good bacteria living in your body.
17
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
Redheads require more anesthesia to 'go under' than other hair colors do.
50
Women buy four out of every 10 condoms sold.
71
Dating back to the 1600's, thermometers were filled with Brandy instead of mercury.
16