After signing on for the program, you'll get all sorts of options based on your lifestyle and the foods you love, including a daily meal planner and an online diary to track your meals and progress. Research has shown that keeping food diaries can help people lose more weight than those who simply watch their weight and don't document food intake [source: Gupta]. NutriSystem's online tools make it easier for you to monitor this on your own.
While you're setting up your program, you'll also create a profile, find articles about healthy eating, gain tips from a team of experts and access a free body mass index, or BMI, chart. Here you can compare height, weight and age ratios and set healthy limits for yourself based on research compiled by the World Health Organization [source: WHO]. Having these health resources at your fingertips will help you succeed with the meal plan that you choose.
The 28-day meal plan is tailored to your interests -- you choose your daily meals (breakfast, lunch and dinner, plus snack/dessert) from NutriSystem's menu options. You'll supplement these meals with some grocery store items, like fruits and vegetables, but there's no need to count calories. All of the portions are measured out for you, since studies show that portion control may be a key factor in losing weight.
So what actually comes in this diet plan? Read on to discover the foods within the NutriSystem diet.