SparkPeople isn't just about going on a diet, losing weight, then going off the diet. It's about a whole, new, healthy lifestyle. There's a lot of information about nutritious food and the necessity of physical activity on SP. This 10-minute daily exercise challenge is a good place to start. Whether it works or not will probably depend on the effort you're willing to put into preparing nutritious meals and getting physically active.
No matter how slow you go, you are STILL lapping everybody on the couch.