My goal weight is 115. 10x that is only 1,115 calories. I don't think I could keep my cals that low and not starve. As long as I keep burning more then I take in (trusting fitday on that one) I don't worry to much. I am trying to keep them under 2,000 though, hopefully around 1,500. If I don't make that though I don't sweat it.