I always think BMI is a guide, but not worth getting obsessed over or the holy grail that must be achieved, as has already been said anyone with a reasonable amount of muscle will come out as overweight or even obese which is nonsense, and your waist measurement along with your height & BMI should be looked at all together. I've always thought it odd that men & women use the same chart too, you'd think a healthy BMI for a man would be higher than that for a woman!