There are more bacteria in your mouth than there are people in the world.
60
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
Household bleach is the recommended chemical to decontaminate people exposed to the anthrax virus, by the U.S. F.D.A.
16
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
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
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
Redheads require up to 20% more anesthesia to be knocked out.
112
The brain can stay alive for 4 to 6 minutes without oxygen. After that cells begin die.
193