As far as I know, Madonna's shape is the result of years of weight lifting and yoga type exercises (don't remember the name but it's the advanced exercises of yoga)
Yeah. Madonna's been in shape for years without this thing.
I'd like to see who manufactures this vibrating machine and in what way they're in association with Madonna's reps.
Years ago they said a twenty minute sauna session would burn 600 calories. In that case bodybuilders would have been preparing for a show in there instead of on a treadmill.
Save your money and don't believe this stuff until some actual scientific studies come out showing it's effectiveness.