Exercise and immunity Battling another cough or cold? Feeling tired all

BADCE  HFIKJ
【原文翻译】     
Exercise and immunity 运动和免疫
Battling another cough or cold? Feeling tired all the time? You may feel better if you take a daily walk or follow a simple exercise routine a few times a week.
又是咳嗽还是感冒？一直觉得累吗？如果你每天散步或者每周做几次简单的锻炼，你可能会感觉好些。
Information 信息
Exercise helps decrease your chances of developing heart disease. It also keeps your bones healthy and strong.
运动有助于减少患心脏病的几率。它还能保持你的骨骼健康和强壮。
We do not know exactly if or how exercise increases your immunity to certain illnesses. There are several theories. However, none of these theories have been proven. Some of these theories are:
我们不清楚运动是否或如何增强你对某些疾病的免疫力。有几种理论。然而，这些理论都没有得到证实。其中一些理论是：
Physical activity may help flush bacteria out of the lungs and airways. This may reduce your chance of getting a cold, flu, or other illness.
体力活动可能有助于将细菌从肺部和呼吸道排出。这可能会减少你患感冒、流感或其他疾病的机会。
Exercise causes change in antibodies and white blood cells (WBC). WBCs are the body's immune system cells that fight disease. These antibodies or WBCs circulate more rapidly, so they could detect illnesses earlier than they might have before. However, no one knows whether these changes help prevent infections.
运动引起抗体和白细胞（WBC）的变化。白细胞是人体抵抗疾病的免疫系统细胞。这些抗体或白细胞的循环速度更快，因此它们可以比以前更早地发现疾病。然而，没有人知道这些变化是否有助于预防感染。
The brief rise in body temperature during and right after exercise may prevent bacteria from growing. This temperature rise may help the body fight infection better. (This is similar to what happens when you have a fever.)
运动期间和运动后体温的短暂升高可能会阻止细菌生长。这种温度升高可能有助于身体更好地抵抗感染。（这类似于发烧时的情况。）

Exercise slows down the release of stress hormones. Some stress increases the chance of illness. Lower stress hormones may protect against illness.
运动减缓压力荷尔蒙的释放。有些压力会增加生病的机会。低压力荷尔蒙可以预防疾病。
Exercise is good for you, but, you should not overdo it. People who already exercise should not exercise more just to increase their immunity. Heavy, long-term exercise (such as marathon running and intense gym training) could actually cause harm.
运动对你有好处，但是，你不应该运动过度。已经锻炼过的人不应该为了增加免疫力而多锻炼。大量的长期运动（如马拉松跑步和剧烈的体育锻炼）实际上可能会造成伤害。
Studies have shown that people who follow a moderately energetic lifestyle, benefit most from starting (and sticking to) an exercise program. A moderate program can (39) consist of:
研究表明，遵循中等精力生活方式的人，从开始（和坚持）锻炼计划中受益最大。中等程序可以包括：
Bicycling with your children a few times a week
Taking daily 20 to 30 minute walks
Going to the gym every other day
Playing golf regularly
每周和你的孩子骑几次自行车
每天散步20到30分钟
每隔一天去健身房
经常打高尔夫球
Exercise makes you feel healthier and more energetic. It can help you feel better about yourself. So go ahead, take that aerobics class or go for that walk. You will feel better and healthier for it.
运动使你感觉更健康，更有活力。它可以帮助你对自己感觉更好。那就去上有氧运动课或者散步吧。你会因此感觉更好更健康。
There is no strong evidence to prove that taking immune supplements along with exercising lowers the chance of illness or infections.
没有有力的证据证明，在运动的同时服用免疫补充剂可以降低患病或感染的几率。