BMI also doesn't take into account frame size. I have a friend who is the same height as me. Her pelvis is much more narrow than mine. My skeleton wouldn't fit into a size 0. She could be grossly overweight and still fit into "normal" sized clothing.
In order to fall into the "normal" BMI category, I know what I would need to weigh. I've been there as an adult, but I could only eat 1200 calories a day and I needed to workout intensely almost every day in order to maintain that weight. I felt cold and weak all the time. It's just not worth it. I'd rather be healthy, fit, enjoy life, and be classified as "overweight".
In order to fall into the "normal" BMI category, I know what I would need to weigh. I've been there as an adult, but I could only eat 1200 calories a day and I needed to workout intensely almost every day in order to maintain that weight. I felt cold and weak all the time. It's just not worth it. I'd rather be healthy, fit, enjoy life, and be classified as "overweight".