It's easy: Just pick from one of five breakfasts, lunches, snacks, and dinners every day. There are more than 625 possible combinations, all of them quick and healthy, including frozen entrées and meals at restaurants such as Wendy's.

No matter what you choose, you'll stay within your calorie budget. Then you can savor your ice cream guilt-free! Women get 1 cup, and men get 1 1/2 cups of ice cream every day. (For help with servings, see One Scoop or Two?) You'll still drop pounds, because your treat is factored into a nutritious diet that totals 1,500 calories a day for women and 2,000 calories for men. Since you'll be cutting 300 to 500 calories from a typical daily intake, women can lose up to 30 lb and men up to 50 lb in a year!

To keep calories in check, choose a reduced-calorie ice cream. But don't say yuck just yet! To guarantee your satisfaction, the Prevention staff tested nearly 30 lower-calorie ice creams, bars, and frozen yogurts. (A tough job, but we did it for you, dear readers!) And we discovered some fabulous choices! (See Light on Calories, Big on Taste.) All of them meet our diet's guidelines of 125 or fewer calories per 1/2-cup serving and at least 10% of calcium's Daily Value of 100 mg per serving.