Okay, there's this thing called

"binge and purge"

My teacher brought this up in class, and explained this could be a way anorexia is gained.

I was so curious to how this makes one grow so thin they are to the bone, and I know what binge and purge is,

eating junky food, and throwing everything up right after, but I want to know what it does to your body so I can learn exactly why it is SO bad.