Quoting Llatikcuf :
If you refer to the simple geometric principle that volume is
proportional to height^3, then you'll see that 6'8" and 300 lbs is
equivalent to 6'0" and 219 lbs., or 5'6" and 168 lbs. That's normal
for fit men of heavy build at those heights.
that's not how I remember health class-
[BMI]

Indeed, it is obvious that BMI is bogus for people of unusual height
precisely because it does not take account of the square-cube law.
--
David Damerell Distortion Field!
Today is First Mania, July.