You wrote:
>I also have felt a strange but not unpleasant tingling
>around my shoulder blades that I have been wondering
>about.
I'm sure others will correct me if I'm wrong, but isn't the BAT
(Brown Adipose Tissue) organ, which is responsible for
thermogenesis, located between the shoulder blades? It sounds
like you are indeed feeling your body burning its fat.
.:. Craig