I signed up for the 6 week fitness challenge 5.5 weeks ago, after 5 weeks I lost 15 pounds and will likely lose 17 to 18 pounds by the end of week 6.If you are ready to make a change in both your eating and exercise habits I’d recommend you sign up for the challenge. They provide individualized diet plan, cross training classes and weight training instruction as part of the challenge. The weight machines have video screens and USB key fobs that show you the exercise, what weight to lift and a pacing feature that shows you how fast/slow to lift the weight. The fitness instructors are great, greet you by name and available to answer any questions or provide motivational advice.