Loved the first episode with the high school student who had the nagging mom. She was so determined, and she looked great. I loved that they showed her ordering in the restaurant, how she asked questions to figure out what was in her food, and they showed her eating healthy snacks, like fruits.
The second girl was annoying and whiny. And honestly, 90lbs in one summer is very, very unhealthy. No self-respecting doctor, nutritionist, or trainer would support such a dangerous weight loss in a short period of time. Also, based on a comment the trainer made, the second girl was on some kind of milkshake diet. So unhealthy. She'll gain the weight back in no time flat. There's a reason why doctors suggest 1-2lb weight loss in a week and using a healthy diet to get there.