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I believe fat can be stored underneath the abdominal muscles as well as over them so while you may not have a lot to pinch if you lose all the fat your waist may shrink more than you'd think. What are your other measurements? In particular your wrist and hip measurements. Perhaps also your neck and knee sizes. If you really have a wide waist your other measurements should be pretty big too. I have a fairly wide waist but my wrist is 7.5 inches around.
