I find it useful for metric for comparison. I can't compare my weight to yours as we have different body types, height etc. . However, if your BMI is in the 18

I find it useful for metric for comparison. I can't compare my weight to yours as we have different body types, height etc. . However, if your BMI is in the 18.5 - 24.9 range and mine is 26, it would be a fair to say that you are in better shape than me.