The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
When your face blushes, the lining of your stomach turns red, too.
154
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Cigarette smoke contains 4,800 chemicals, 69 of which cause cancer.
145
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Children are more allergic to cockroaches than they are to cats!
46
Foreign accent syndrome is a rare brain disorder which causes people to speak in a foreign accent involuntarily.
15
When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
30