Ummm I'm not doubting you on the BF%, the machine said 17%, I myself believe it to be more, BUT, I usually retain a lot of muscle mass when I DO cut down...and I have extremely small bones and very short limbs...170---180 cut on me looks a lot like 200 cut on someone else just because how short and compact I am.....I just hope to cut down...hit around 180 IF I CAN at around 8% or so, THAN bulk up, this time with steroids...and defently want to hit 250.....so lets see what happens....again my plans are to go Pro....