I was just curious, is the thin tummy the same as the ab vaccum?
My instinct says yes, they're the same. But to be sure, where'd you hear of the "Thin Tummy"? teeheehee.
With the Thin Tummy you focus on flexing only the LOWER abs as hard as you can. Not sure if that is true of the vacuum - that may be all abs.
Ian King uses it in most of his abdominal routines.