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				Originally posted by ZTAMich  
Along these lines... 
couples who have been together for a looooong time I have heard can cause a calm to the heart rate.  It's a comfort thing. 
			
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 On that same line, if you can't get to sleep, start breathing at the same rate of your partner.  Chances are good that you'll be asleep in no time!
And I thought that pupil dialation was old news, really old news!