文章大意:这是一篇说明文。文章主要说明了人们长时间节食后体重会增加是因为节食导致身体运作缓慢。身体想要保持体重,缓慢的减肥方法比大幅减少卡路里更健康。为了达到减肥的速度,你需要摄入多少卡路里取决于几个因素,包括你的年龄、初始体重、活动水平和性别。
If you’ve followed dieting advice and experienced significant weight loss, only to have it return; you’re not alone. It’s also not your fault. The human body is designed to maintain balance as much as possible. In a restricted calorie environment, the body adapts to using fewer calories each day to function. This leads to a slowing in metabolism, which makes it even. more difficult to lose weight and ultimately leads to gaining weight again. Muscle is more metabolically active than fat, which means it burns more calories at rest than fat does. If your body starts breaking down muscle to fuel its basic functions, that can further slow your metabolism and make losing weight and keeping it off long term difficult.
Because the body wants to preserve weight, a slow approach to losing extra pounds is healthier than sharply cutting calories. It’s better to pace your weight loss by eating just enough calories to keep you at insufficiency while still meeting most of your body s energy needs. This will help keep your metabolism working efficiently.
Determining the number of calories you need to eat to meet that rate of weight loss will depend on several factors, including your age, starting weight, activity level and sex. Candace Pumper, a staff dietitian with the Ohio State University Wexner Medical Center in Columbus, says, “The Academy of Nutrition and Dietetics position statement on adult weight management recommends 1,200 to 1,500 calories per day for women and 1,500 to 1,800 calories per day for men to support weight loss.”
She notes, however, those guidelines are “not meant to substitute for professional nutritional advice or treatment. It’s recommended individuals follow the advice of their dietitian’s guidance regarding appropriate calorie intake, as many factors affect calorie needs.” She also notes that if one is looking to lose weight quickly, he has to work with and be supervised by a health care provider.
8. Why do people gain weight after dieting for long?
A.The muscle burns fewer calories at rest than fat. | B.The body functions slowly because of dieting. |
C.It is hard to strike a balance while in hunger. | D.It is impossible to have a long-term effect. |
9. What does the underlined part “at insufficiency” probably mean in Paragraph 2?
A.Being improper. | B.Being unhealthy |
C.Being inadequate. | D.Being unnecessary. |
10. Which of the following may determine calorie loss?
①age
②weight
③identity
④gender
11. What is suggested in the last paragraph?
A.Individual efforts matter a lot. | B.Professional advice is important. |
C.Calorie needs vary from person to person. | D.Care providers can be relied on for weight gain. |