The human brain is insensitive to pain.
76
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
Every hour one billion cells in the body must be replaced.
17
The average sperm cell swims at 8 inches per hour.
4
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
It is possible to go blind from smoking too heavily.
50
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
Vaccines contain formaldehyde, ethylene glycol (antifreeze), phenol (disinfectant / pesticide), and aluminum.
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