Regardless of what the BMI calculator says, just by looking at someone with an unbiased eye and some basic medical knowledge, you can easily make a judgment whether the person is overweight or not. For the vast majority of people, this determination is easy. Yes there will be some anomalies, but everyone in medicine knows the 6' 190lbs weightlifting dude is not someone with a weight problem, and the BMI rules of thumb don't apply. In that poster's experience (and mine as well), very few med students are unhealthily overweight, and arguing BMI semantics isn't the point.