Good landlord, losing weight and fitness are two different concepts. If you want to lose weight, you must eat less and naturally lose weight. The method of losing 4 pounds in 7 days is actually very simple, that is, controlling calorie intake. Breakfast is porridge, lunch is normal but no meat, dinner is fruit, and then some aerobic exercise is added. The effect is obvious! 80% of obese people have the habit of eating midnight snack. If you lose weight, you must stop midnight snack! If possible, have oatmeal for breakfast. It is rich in fiber and nutrition, and it has no calories. Just eat 7 minutes full for lunch! The landlord will lose weight according to this method 1 month! As for the personal trainer, it is one of the profit models of the gym. Just go to the gym for 40 minutes every day. Then do some exercises like sit-ups, and you will succeed!