Its all about perspective
I can, to an extent, understand the envy of the body it's self but not the will of the person to hold back on eating.
It's also odd because it's not always about will, some people just don't feel interested in eating.
So to me that's nonsensical and very creepy.
I do believe they have unbelievable willpower. I just think that they could be channeling their strength towards a different cause.
It doesn't take any willpower once you're anorexic. That's the thing: Eating takes willpower, slowly starving yourself does not. That's why it's a disease.