OceanWaves,
I've been having the inner body vibrations that feel much like an electrical current flowing through me for the past few years. Sometimes it'll wake me up in the middle of the night and I can lay there and feel the deep inner vibrations throughout most of my body. This process has been called
"the rewiring" and has to do with our central nervous systems and portions of our DNA being changed, expanded, to be able to handle far more and much higher energies without blowing a fuse!
It's not connected with any guides or angels but is simply a process of expansion or evolution we're going through now.
On the other hand there may be your guide/helpers/angels etc. nearby or watching sometimes when this process is happening to you. I too have felt the cool areas both in rooms and on areas of my body, usually my solar plexus and heart chakra, indicating a big energy change is going on. For me both of these things have nothing to do with spirits or guides but with large energy changes and increases.