初二英语作文，题目是 运动会之后 要求80个词以上 过去式

初二英语作文，题目是 运动会之后 要求80个词以上 过去式

After physical exercise, especially in summer, due to sweating, you can drink salt boiling water, appropriate to add water and salt, but not a lot of water, but not a cold drink. This is because:

( 1) movement, large amounts of blood flow to participate in activities of the muscles in the gastrointestinal tract, the vessel is in a contraction, when a large number of drinking water, increased the burden on the stomach. Especially to eat cold, stomach by the cold stimulation, a sudden contraction of blood vessels, so often, can cause stomach disorders;

( 2) motion just completed, the heart is in need of rest, such as the amount of water, some water after absorption in the gastrointestinal tract, rely on cardiac" pump ", through the blood circulation is delivered to the body, it will increase the burden on the heart;

( 3) after exercise is easy to sweat, sweat away in a certain amount of salt, and then a large number of drinking water through perspiration, and will take salt, causing more blood in salt.

Therefore, after exercise should not be drinking a lot of water.

体育运动后，特别是在夏季，由于出汗多，可以喝些盐开水，适当补充水份和盐份，但不宜大量饮水，更不宜大量吃冷饮。这是因为：
（1）运动时，大量血液流到参与活动的肌肉中去了，胃肠道的血管处于收缩状态，此时大量饮水，加重胃的负担。特别是吃冷饮，胃受到冷刺激，血管突然收缩，经常这样，会导致胃功能的失调；
（2）运动刚完毕，心脏正需要休息，如大量饮水，一部分水经胃肠道吸收后，需依靠心脏“水泵”的作用，通过血循环输送到身体各处，势必增加心脏的负担；
（3）运动后易出汗，汗带走了体内一定量的盐分，再大量饮水，又会通过排汗带走盐分，进一步造成血液中缺盐。
因此，运动后不宜大量饮水。
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