So, is it time to say bye bye to BMI ?. I have been having a look about at different sites and stuff to see what others think, as BMI isn't really a good indication of fitness. The whole height / weight ratio really depends on body shape, body size (muscle) and other things. Just because a BMI chart tells you you are underweight/ overweight or obese should not be a "set in stone" procedure for judging if they are fit or not. With me, i am 38, can pass a PFT, but, because i do weights as well as CV work, my BMI is 31.5 ....which according to the chart is obese. But, my waist is only 34 inches !!. BMI bye bye That is one of the places i was looking at. Just wanted to know other peoples opinion of BMI, and if they agree or disagree if it is a bad method of judging fitness.