There are countless weight loss systems on the market today and choosing the one that will work for you can be a real challenge. We've researched five of the more prominent plans to let you know how they work. We've also attempted to point out some potential pitfalls so you'll know what to avoid. No matter what means you choose to lose weight, remember -- looking "good" is not as important as being well and staying healthy. If you are going to diet, be safe and smart!