Starving yourself makes you "not lose weight", then how are anorexic people so skinny?

Thats actually a really good question. I think the problem here is that the answer you read is really confusing. Here is the...pardon the pun..skinny on starvation. The primary source of energy your body needs to run on is protein. It does use other things like carbohydrates and sugars but the main one is protien. When you starve yourself your body thinks it isn't going to get any more protein so starts looking to it's self for a different source. Any idea where the largest of concentration of protein is in the human body? Your muscles! When a body shifts into starvation mode it literally starts eating it's own muscle. The fat in your body provides little to know nutritional value (hence the reason we have to burn it off with exercise) so what you end up with is a body with very little muscle and a higher body fat content. Needless to say, very unhealthy. Hope this makes it a little clearer for you.