The "Lean and Green meal" is made up of a lean protein (7 oz. chicken, turkey or fish; or 5 oz. lean beef, pork or lamb) with 1 to 2 teaspoons of ketchup, mustard, barbecue sauce or another condiment of your choice. In addition, you'll choose from 2 cups of salad greens and up to 1/2 cup raw vegetables or up to 1 1/2 cups cooked vegetables topped with 1 to 2 tablespoons of Medifast low-fat or non-fat dressing.

On the Medifast program, you eat every 2 to 3 hours to stave off hunger. You drink a minimum of 64 ounces of calorie-free fluids - water is the recommended beverage of choice. You can have one snack a day which can include soy crisps, crackers, fast soups, celery, sugar-free gelatin, sugar-free Popsicle, dill pickles or sugar-free gum.

The weight-loss provider has been in business for more than 20 years and has served more than 1 million customers. According to a study done by the esteemed Johns Hopkins University, Medifast enables people to lose weight in a quick, safe manner by lowering calorie intakes. Membership can run about $10 a day depending on which program you sign up for.