http://health.discovery.com/BodyChallenge/index.jsp

Q:  What is National Body Challenge?
A:  The Discovery Health’s National Body Challenge is a FREE, eight-week, comprehensive fitness and weight-loss challenge that provides the tools and inspiration, online and on television, to get in shape, shed extra pounds and adopt a healthier lifestyle. Open to individuals, groups and families, the National Body Challenge offers the flexibility for participants to make the right choices to meet their personal nutrition and fitness goals.

Among other things they offer 8-weeks free membership to Bally Total Fitness. If you decide to go for it - be careful before you decide to sign up for Bally’s paid membership after 8 weeks - as some consider their business practices questionable.

Q: What will I get if I join?
A: All registered National Body Challenge participants will receive access to our online customized meal plan, a personalized activity and weight tracker, extensive information from doctors and health and fitness experts, a free eight-week membership to Bally Total Fitness*, online recipes, special savings from Discovery Channel Stores and more.

*The eight-week Bally Total Fitness pass is only available until Jan. 17, 2006, at 11:59 p.m. ET, and is effective from Jan. 14, 2006, through March 11, 2006.