课时作业(6) 必修第二册 Unit 2 Be sporty, be healthy（Word练习）-【优化指导】2024高考英语一轮复习高中总复习·第1轮（译林版 新教材 新高考）

课时作业(六)　Unit 2　Be sporty, be healthy 一、七选五阅读 (2022·湖南省长沙市周南中学高三三模)Science shows that stretching isn’t actually literal—you’re not even “stretching” your muscles at all. 1. . It does wonders for both your joints and your muscles. What’s more, stretching helps your blood flow, reduces your risk of injury, helps you lose weight, and even relieves your stress. So what if you don’t do stretching after exercise? You could feel sick. You won’t be surprised to know that when you exercise, you raise your heart rate for a period of time. 2. ， experts will tell you that it’s just as important to “get your heart rate back to a normal level after the workout is over.” This is also known in the fitness world as “cooling down”． “After physical activity, your heart is still beating faster than normal, your body temperature is higher and your blood vessels are dilated，” write the health experts at the American Heart Association. “This means if you stop too fast, you could pass out or feel sick. 3. . ” Your muscles will likely become stiffer and more sore. When you exercise your muscles, it produces an inflammatory response in the form of lactic acid, which is actually what causes your muscles to become sore. When you rest—or “recover”—in the time between bouts of exercise, your body naturally breaks down and gets rid of that lactic acid. One thing that helps your body dispose of that lactic acid? 4. . Stretching helps you distribute oxygen throughout your body and muscles, which, according the Healthline, “can reduce lactic acid production and rid your muscles of any accumulation of lactic acid. ” 5． ． Having poor flexibility isn’t good for your body. According to the experts in the sports medicine department at UC Davis Health, inflexibility will cause you to have muscles that tire quicker and joints that are more likely to suffer from injury, and your weakened range of motion will lead to less blood and nutrients to your joints. In the case of the latter