BMI takes nothing but height and sex into account. It's the laziest possible evaluation of someone that's based off two numbers. But that laziness is also why i

BMI takes nothing but height and sex into account. It's the laziest possible evaluation of someone that's based off two numbers. But that laziness is also why it's so popular, because it takes no effort to produce a judgement over someone. Jamie Hyneman of Mythbusters fame was 185# at 5'8" while on the show (according to some filmed weigh-ins). According to BMI calculations, he's overweight and trending towards obese. And I wouldn't say he's trying very hard to build muscle, he just has a physical job and works out. It's crap, even for "average" people.