Bests & Worsts Reviews from Amazon

Only reads your weight, then backs into preprogrammed numbers based upon data you input. I was losing fat and gaining muscle, but the scale was just increasing all my numbers prorata, which seemed odd as I was clearly losing fat. To test my hypothesis, I put my 135lb son on the scale while holding 52lbs of steel weights to match my weight today, guess what? His body composition numbers for every category was exactly the same as mine, even though that would be impossible if it was reading anything at all. I’m tempted to take the steel tabs off and see if there is anything at all under there, but don’t want to ruin the scale.