OK. I've been seeing this thread, and avoiding it, because I have really, really been off track since I lost 10 pounds in November/December. I had really been on track. Since then, I have tried 1000 times to get restarted, but I am struggling. I'm working out lots...but the eating is not sane at the moment.
I would like to join the non-reward challenge. I almost hate to join, because I don't like lying to myself, and honestly, I am not sure I am motivated to stay on track at the moment. But, I really, really need to lose some more weight. I haven't been this heavy, for this long, for a long time. 
So, here we go. Deep breath. Starting weight for this challenge: 162lbs.
I would like to lose 10 pounds in this 8 weeks. But, even if it was a solid 5 pounds, that would be an improvement. Good luck, everyone!
"The best rides are the ones where you bite off much more than you can chew, and live through it." ~ Doug Bradbury