Redheads require more anesthesia to 'go under' than other hair colors do.
50
While 7 men in 100 have some form of color blindness, only 1 woman in 1,000 suffers from it.
50
The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.
130
Crushed cockroaches can be applied to a stinging wound to help relieve the pain.
31
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
Your heart will pump about 212 million liters in its lifetime.
26
Your tongue is the only muscle in your body that is attached at only one end.
173
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