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2010-08-11 08:32:07
The most common health problem linked to hot weather is heap heat stress. Usually, it is also the least severe. The causes of heap heat stress include wearing heavy clothing, physical work or exercise, hot weather and high humidity. Humidity is the amout amount of water in the air.
If several of these conditions are present at the same time, a person's body temperature may rise above safe levels. The person loses large amouts amounts of body water and sought salt in perspiration. Perspiration is one of the body'defenses body's defenses against heat. It is how the body releases water to cook cool the skin.
Most people suffer only muscle pain because of heap heat stress. The pain is a warning that the body is becoming too hot. Doctors say those suffering muscle pain should stop all activity and rest in the a cool place. They should also drink cool liquids. Doctors say not to return to physical activity for a few hours because serious conditions could develop.
Some people faced the face an increased danger from heap heat stress. They may have a weak or damaged heart, high blood pressure or other problems of the blood system. Severe heat increases problems for small children, or the older adults and those who have the disease, diabetes.
It is also dangerous for people who weigh too much , and have too much body fighter fat, and for people who drink alcohol. Hot weather also increases dangers for people who must take medcine medicine for high blood pressure, power poor blood flow, nerversness nervousness or depression.
| 听写于：2010-8-11 8:31 | 用时：24:19 | |
| 正确率：92% (+21分) | 错词：20个 |
