Calculate BMI and measure waist circumference: how do you do that?

Are you too fat? Are you overweight? Then calculate your index and waist circumference. It was the Belgian statistician Adolphe Quetelet (1796 - 1874) who found that in people over twenty years of age the body weight increases directly in proportion to the square of their height. This was called the Quetelet index, now known primarily as the Body Mass Index, abbreviated as BMI. ...