Weight loss challenge or get fit challenge

Options
Hi,
I was wondering if anyone out there is doing a "Weight Loss Challenge" (from meetup.com) or "Get fit challenge" (offered by Golds Gym) ? They are 12 weeks long and at the end there's a chance to win money for the biggest body fat percentage loss. I'm mostly doing these mostly for motivation and mfp has helped keep me under my 1200 cal goal. I'm so glad I found this website and ipod app :happy: