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"Black Bush" by Dave Chappelle |
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Laughter, it does a body good!
Laughter
is the biological reaction of humans to moments or occasions of
humor:
an outward expression of
amusement.
Laughter is subcategorised
into various groupings depending upon the extent and pitch of the laughter:
giggles, clicks (which can be almost silent), chortles, chuckles, hoots,
cackles, sniggers and guffaws are all types of laughter.
Smiling
is a mild silent form of laughing. Some studies indicate that laughter differs
depending upon the gender of the laughing person: women tend to laugh in a more
"sing-song" way, while men more often grunt or snort. Babies start to laugh at
about 4 months of age. Philosopher
John Morreall theorises
that human laughter may have its biological origins as a kind of shared
expression of relief at the passing of danger. The relaxation of tension we feel
after laughing may help inhibit the
fight-or-flight response,
making laughter a behavioral sign of trust in one's companions.
I got this from
http://en.wikipedia.org/wiki/Laughter