By Leslie Lindsay I have this friend who seems to “get” the relaxation thing.  I think we have a little something in common:  I need to relax and she knows where to go to get the job done.  Just last week, she invited me to join her at “The Salt Cave.”  The what?! I wanted to know.  I shook my head and sort of rolled my eyes, a bit dismissive of the idea.  (You find it all here in this area of Chicagoland, so I guess I am not too surprised). While I didn’t dismiss it altogether–afterall, I am sort of “into” alternative living in that I am a vegetarian (I eat tofu, yes), I practice yoga, and get accupuncture done from time to time.  Okay…I may be interested.  How can I decline a moment of relaxation? And so I went to the Himalayan Salt Cave.  And I loved it.  It was very…uh, relaxing, just like it was supposed to be.  But just what is this elemental escape?! A darkened room with no outside light …