First, read the English article below.

That's the whole secret to weight loss. And while the theory may be simple, the practice is really hard. One pound is equivalent to 3,500 calories, and to lose 10 pounds in seven days you'll need to lose about 1.4 pounds, or burn about 5,000 calories each day.  Know that you will need to exercise a lot in order to burn 10 pounds in one week. Starving yourself is not an option. In fact, starving yourself makes weight loss harder, especially after you're done with your diet.  Remember that you'll be burning calories while doing daily activities such as walking around, walking up stairs, and even breathing. It won't be many calories, but you don't have to expect to burn all your calories doing hard exercise. If you want to lose 10 pounds in a week, you'll need to burn 5,000 calories more than you take in per day. That's a lot. That's not meant to discourage you; it's only as a reminder of how hard losing 10 pounds in a week actually is. Prepare yourself for a tough, tough journey! Just to give you bit of an idea about how much that is, consider this: a 160 pound person burns about 1,000 calories playing competitive soccer for 90 minutes. That means you'd need to play competitive soccer for 7.5 hours during the day to burn 5,000 calories. This means that if you consume exactly 2,000 calories in food every day, your weight will stay the same — you won't gain or lose weight. If you're trying to lose weight, as you probably do, a healthy person should consume at least 1,200 calories per day, regardless of what their diet is. If you eat 1,200 calories, you'll have about 4,000 calories to burn a day to meet your goal. 

Now, please write a short abstract for it in Vietnamese. Abstract:
Nạp ít calorie hơn lượng calorie tiêu hao trong một ngày. Hiểu rằng mục tiêu của bạn thực sự rất khó đạt được. Biết rằng một người bình thường mỗi ngày đốt cháy 2.000 calorie qua các hoạt động thường ngày.