It has been shown that caffeine causes headaches when stopped suddenly and can cause morning headaches that are relieved by a dose of caffeine.
101
Foreign accent syndrome is a rare brain disorder which causes people to speak in a foreign accent involuntarily.
15
Your thumb is about the same size as your nose.
124
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
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
It is possible to go blind from smoking too heavily.
50