What ARE the chills???

MAN I love the chills I get from listening (REALLY listening) to certain songs.  This morning I had chills the Whole.Entire.Song.  What song?   Nutshell by Alice In Chains.  I may have mentioned this song a time or two...  it's one of my favorites.  But.. for whatever reason, it Really does something to me.  To my.. folicles...   What ARE the chills???  What is actually happening?  Like.. for real for real?  Can anyone explain the chills to me when you're listening to a song you're REALLY digging??  ......very interesting stuff.

Also listened to Babe I'm Gonna Leave you [by Zep] and.. I had ear buds in and... I heard an amazing thing.. something Eye find amazing... You can actually hear Plant's lips open.. then hear him take a breath... before delivering the line.  That's f*cking AWESOME!!  =))  haha..  that kinda stuff really excites me.  Just like how you can hear Bonzo's bass pedal squeek in Since I've Been Loving You.   You know, I know that Zeppelin ripped off a LOT of old blues songs.  A LOT.  But you know what, I don't really give a shit.  Everyone knows it.. They know it..  and they still did a Fabulous job making it their own. Who can disagree with me??  Hm??  No one.  That's what I thought.  HAHA.

Saw an accident on my way in this morning.  Someone in an SUV (it's always an SUV isn't it?) managed to SLAM into a telephone poll, coming from a very small parking lot.. Not the road.  ???  It had JUST happened and the pole was very much tilted...  could have fallen onto the road at any moment.. and I drove Under it!  Made for an exciting trek in..