A hard working adult sweats up to 4 gallons per day. Most of the sweat evaporates before a person realizes it's there, though!
25
In the average lifetime a person will breath in about 44 pounds of dust.
21
While 7 men in 100 have some form of color blindness, only 1 woman in 1,000 suffers from it.
50
Brain freeze is caused by the brain sensing the drop of temperature on your palate and increasing blood pressure in an attempt to save you from freezing.
14
The average sperm cell swims at 8 inches per hour.
76
Gardening is said to be one of the best exercises for maintaining healthy bones.
40
Your body is creating and killing 15 million red blood cells per second!
14
Children are more allergic to cockroaches than they are to cats!
46