What ever you feel it is. Some people just have more muscle then others so they are heavier on the scale while others can be naturally skinnier no matter how much you eat you can be 5'8" and 107lbs. I've been there. I'm trying desperately to gain wait I don't listen to the B.M.I. at all if you should listen to anyone it should be your nutritionist. Most people have called me a stick or anorexic and all that but I'm actually not anorexic at all. My doctor considers me normal weight.