The BFST produces electromagnetic energy, which works underneath the skin, in the soft tissue, to stimulate healthy blood flow. The electromagnetic energy the BFST creates is what results in healing the muscles, tendons, and ligaments - the increase in blood flow provides oxygen and nutrients to the damaged areas.
The sensation you'd feel during BFST treatments is a slight warmth, about 1-2 degrees above body temperature. This warmth is a byproduct of the electromagnetic energy that the BFST produces.
You can find more detailed information about the BFST at the link below!
http://kingbrand.com/BFST-Home.php?REF=2160PV515.1522
