A person will burn 7 percent more calories if they walk on hard dirt compared to pavement.
45
The human heart creates enough pressure to squirt blood 30 ft.
37
Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
While 7 men in 100 have some form of color blindness, only 1 woman in 1,000 suffers from it.
50
If you are cold you are more likely to be hungry because you use energy to keep warm.
143
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
Household bleach is the recommended chemical to decontaminate people exposed to the anthrax virus, by the U.S. F.D.A.
16