Exploring Exilis for skin tightening & fat reduction, and am trying to fully understand how it works. What actually happens to the fat cells during the Exilis treatments? I've read they "shrink", but if that's true, how is that different than what happens after regular, consistent exercise? Also, if radio frequency waves surpass the outside layer of skin and penetrate into the dermis, how does that then make the skin/area look tighter? Can "destroying cells" really be good? Analogies? Help!