A sock is an item of clothing
worn on the feet. The foot is
among the heaviest producers
of sweat in the body, as it is
able to produce over 1 US pint
(0.47 L) of perspiration per
day. Socks help to absorb this
sweat and draw it to areas
where air can evaporate the
perspiration. In cold
environments, socks decrease
the risk of frostbite. Most
sports will require some sort
of sock, usually a tube sock
to protect one's legs from
being scraped while
participating in sport
activities and they are mostly
to stop grass burns. A sock is
also used as a holiday item at
christmas. The sock, or
christmas stocking, is usually
hung by a nail and filled with
small presents which Santa
brings while the recipients
are asleep.
