I watched it too!
I agree I found it very sad. I could relate to some of the things some of the teens were saying...I felt like that alot of the time when I was a teenager- and it sucked!
I am so happy now I am healthy etc, and it sadens me to see people so unhappy, unfit and just generally giving up on life!
I am going to watch the show as well. I am looking forward to seeing the teens not only change there appearance but also there minds as well!