This article is from the Diet FAQ, by Claudia McCreary firstname.lastname@example.org with numerous contributions by others.
Most physicians consider your body fat percentage to be a far better
indicator of overall fitness than weight. Normal ratios are 12-18% body fat
for men and 19-25% for women; very fit people (e.g., athletes) may have much
lower percentages. Unfortunately, body fat percentage is more difficult to
determine than weight (see below).