Its been discussed before somewhere on arrse, but using the BMI chart for bodybuilders (for example) claims they are dangerously obese. Stick the same man on a body fat analysis machine and you get a totally different result. In some cases the lads we were measuring had too little body fat.
Thanks for posting the chart, now I understand why I have a permanent stoop; according to the chart, an inch of body mass equals (about) two pounds. Thus having a ten inch knob weighing twenty pounds equals a permanent stoop.