http://uk.askmen.com/love/dzimmer_100/108_love_answers.htmlA 130-pound man will burn about seven calories for every five minutes of vigorous sex. Keeping in mind that vigorous sex uses a lot more muscles than going solo does, don't expect to see people passing up on the gym in favor of porn and some good lube anytime soon.
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TonyUNDERSCORE from the Internet, Sat 13 Jan 2007, 0:29,
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