I reckon, BMI is a fair. Remember its for health and not to gauge how fit you are. If it says your overweight well you still have to support that mass whether its muscle, fat, hair, toenails or ahem big bones. True if your 14st and fit your chances are better than someone who is 14st and fat. But the work your heart/kidneys/liver etc will have to do will excede that of someone whose BMI is within the healthy range. I rememeber a program on the radio stating how our body shape perceptions have changed in the last fifty years, there are more overweight people so we accept that as the norm whereas transport your self back to the 60's and we'd all be bloaters!