If you are one of those who think exercise is a waste of time and of no benefit at all to the body,you might have to have a rethink.
Regular physical activity can help protect from some health problems. For instance,exercise controls weight. For the obese（肥胖的），exercise is very important as it helps reduce body fat by building or preserving muscle mass and improving the body's ability to use calories. When you engage in physical activity, you burn calories. The more intense the activity is, the more calories you burn. When exercise is combined with proper nutrition, it can help control weight and prevent obesity, a major risk factor for many diseases. Besides workouts at the gym, your body can benefit from other forms of exercise such as jogging, fast walking, running, playing games.
Regular physical activity can improve your mood and the way you feel about yourself. Need an emotional lift or need to blow off some steam after a stressful day？A workout at the gym or a quick 30-minute walk can help. Exercise stimulates various brain chemicals that may leave you feeling happier and more relaxed. You may also feel better about your appearance and yourself when you exercise regularly,which can boost your confidence and improve your self-esteem. Exercise gives you a chance to enjoy the outdoors or simply engage in activities that make you happy.
Regular physical activity is a great way to feel better,gain health benefits and have fun. As a general goal,aim for at least 30 minutes of physical activity every day. If you want to lose weight or meet specific fitness goals, you may need to exercise more. Remember to check with your doctor before starting a new exercise program, especially if you haven't exercised for a long time, have chronic health problems,or you have any concerns.



How does exercise help the overweight people？ ______

A. It reduces their appetite.
B. It works muscles and burns calories.
C. It contributes to absorbing proper nutrition.
D. It contains a wide range of forms functioning differently.

What can be inferred from paragraph 3？ ______

A. Exercise is likely to reduce depression.
B. Outdoor activities benefit people's appearance.
C. A 30-minute walk every day can help lose weight.
D. Exercise can create some relaxing brain chemicals.

What's the author's suggestion for someone trying a new exercise project？ ______

A. Getting the doctor's opinions.
B. Setting some fitness goals.
C. Clearing up the concerns.
D. Having a medical checkup.

Which of the following opinions will the author favour？ ______

A. Exercise can consume too much time.
B. Nutrition and exercise are equally important.
C. You can benefit more from outdoor activities.
D. Regular exercise can improve one's overall quality of life.