I am very curious about this since I watch the show and these people have great success. On the order of 10+ lbs a week.

I hate to state the obvious but how do they get all the contestants to follow this? I mean they must be hungry as hell. I am sure there are days when they can't follow this but I am curious how the food situation is? Can they eat when they want? Or is it like prison settings where they are given meals at certain times and can not eat otherwise. I am also considering cutting my calories much more then I have been (though not this extreme). How are they not passng out from malnutrition?