资料题：This article tells you that the first thing to do if you want to lose weight is（　）。

Persons who are overweight should watch their diet carefully in order to lose pounds.The best way to do this is to start a weight control program.At first it is wise to talk with your doctor.He can tell you if your health is good enough for you to try to lose weight.f you are in good health, your doctor can tell you how much weight you should lose.He can advise you of the number of calories you should have in your meals each day.He can tell you about exercising while on your diet.A good rule is to lose slowly.A loss of a pound or two a week is plenty.Plan meals around foods you know.The best diet for you is the one you can be faithful to.This means that it is wise to include foods that you are used to and that are part of your regular eating habits.Strange foods may not satisfy you.They may throw you off your diet.Whenyou have lost the weight you wish, simple items can be added to your diet so that you can maintain the weight you want.While you are dieting, try to build a pattern of eating that you can follow later to maintain your desired weight.Strange and glamorous(迷人的) foods used on a diet may work but will be hard to continue eating afterwards.As a result, you may become discouraged and go back to the old habits that put on the extra weight in the first place.When you plan meals, follow a sound food plan.Be sure to include the daily nutrition you need.Make certain you are getting the right kinds of food.When dieting, choose low-calorie foods.Avoid such items as fats, gravy, sauce, fried food, sweets, cakes, alcoholic drinks or soft drinks, and cream.Use spices, herbs, or tart fruit juices to season your food.Learn to like cereal or fruit with little or no sugar added.Try to take coffee and tea without sugar or cream.Snacks can be part of your diet.For example,a piece of fruit or a crisp vegetable, or a simple dessert saved from mealtime,can be eaten between meals.Keep busy! This way you will not be tempted to go off the diet.Take advantage of opportunities to exercise.Try walking instead of riding whenever possible.Happy dieting!