I was 102kg. I now weigh 94.5kg and am close to my goal of 90kg. But, according to any BMI calculator 85kg would be optimum. This seems ridiculous as at 90kg I'm a walking skeleton. I'm 190cm tall and while not hercules have at least decent muscle development. To me 90kg is about right but every where I look 85kg seems to be the 'target'. What gives here?