S.H.
I recall feeling 'fat' in HS and college and I weight 132 and 5'8.5" What shocked me the most was to find out some girls shorter (5'4" or so) could weigh more and look amazing. I imagine they have a lower fat% and higher muscle % than I had. I honestly do not think the BMI is a very good way to judge someone's health.
This is actually a new BMI that will be out soon. I can now weigh more according to the BMI and still be 'healthy.'
http://people.maths.ox.ac.uk/trefethen/bmi_calc.html