Public health authorities are forever telling us how much we should weigh, but one essential element is missing: shape.
Let’s start with a little quiz. Below is a series of 3D laser scans of bodies, each seen from the front and the side. A 3D laser scanner is a miracle machine that creates a digital statue of your body painlessly and in a matter of seconds. Your task is to rank the bodies in order of ‘fatness’.
Now there are lots of ways to measure whether we’re overweight — we’ll come back to that — but for this quiz I want you to rank them according to body mass index (BMI), the most commonly used method of quantifying weight.