Other than noise, I don't understand what skipping two meals a day does? They'll be grumpy? the prison will have a lot of food waste?

Look, I get that they trying to make a point about solitary, and torture, etc. and yes there needs to be some serious reform in our corrections system -

Not reporting for their work assignments and classes I get, but skipping two meals a day? I don't know. I must be missing something.

I guess when you're that powerless - when everything else has been taken away, you control the few things you can.