第1个回答 2012-04-22
Everyone hopes to live happily in the world. Physical exercise is indispensable to a happy life. There is a famous saying:"Life lies on exercise." Although you will not necessarily die without regular physical exercises, they' II certainly help you live longer and more healthily.
Exercise is good for us to build our bodies. It helps co - ordinate the different parts of our bodies when we have sports. For example, we must try our best to co - ordinate the movements of the arms and legs when we play basketball, or we won't be able to shoot the basket. Exercise also benefits our organs. It lets the heart beat faster than usual, and then helps enlarge the blood vessels to protect us from heart attacks.
Exercise can also contribute to the development of our ability to response agilely. For instance, when you play table- tennis, you must try to reflect as quickly as you can so that you may fight back at the right position at the fight moment.
Exercise can also contribute to improving our mood. When you do exercise, you move a lot, and you have to be more active. It helps you become more optimistic.
Exercise will fill your life with various contents and make it more colorful.
What's more, exercise will help you get rid of your inertia. If you keep doing exercise regularly, you will never be a lazy person. Therefore, exercise has great effect on one's character.
In a word, exercise is helpful, important and absolutely necessary.本回答被提问者采纳
第2个回答 2012-04-22
As you can see, the topic, health benefits of regular physical activity is almost like a cliché. Wherever you go, whoever you talk to, you always have conversations like this: have you ever been to the gym? How do you like yoga? Balabala. If you tell people that you actually don’ like exercises, then your parents, friends and even strangers will definitely try to persuade you to do some exercises. Usually, they will tell you all kinds of health benefits of regular physical activity, improving your mood, combating chronic disease, controlling your weight, promoting better sleep, etc.
Well, that’s true. But you will not really recognize them until you’ve been through. A good example is my mother. She was diagnosed with hypertention two years ago, and took different kinds of drugs. However, the result was not as good as we had expected. Then she decided to do exercises regularly, following doctor’s advice. Not some magic exercise, you know, just walking and jogging. After a few months, her blood pressure turned back to normal again with the minimum of drug doses. Yeah, a vivid example. Now, she’s still insisted on.
But remember, merely understanding the health benefits is far from enough. You should pay attention to the types of exercise and the duration time. Different types of exercise offer different benefits. Aerobic or cardio workouts primarily improve the cardiovascular system, while weight-training or strength-training improves muscular strength and flexibility or stretching exercises improve overall mobility and coordination. And the lasting time also matters. Experts recommend a 30 minutes of moderate- intensity physical activity most days of the week. Don’t go extremes and let exercise harm you.
Hope everybody will gain benefits from regular physical activity.