If you take the guideline that you get taught for the jaa exams (yawn)
weight(kg) divided by (height(m) x height(m))
for you you
90 / (1.83 * 1.83) = 26.8
a result of < 20 means you're under weight
>25 over weight
>30 obese
These figures are for a blokes i don't have the ones for girls
Hope this helps
[ 10 September 2001: Message edited by: wobblyprop ]