Everyone feels tired at one time or another. The office worker feels tired after a hard day at work. The sportsman feels tired after hours of physical training.
The explanation is that when you exercise a muscle in your body over and over again, something known as fatigue toxins (疲劳毒素) is produced. The blood system then carries these toxins throughout the body. In the end, not only does that muscle feel tired but the whole body feels tired as well.
Sleeping is one of the best ways to fully recharge (使恢复精力) your tired body. Most importantly, the damage caused by tired muscles is slowly being repaired when we sleep.
  Another way to get over fatigue is by doing some activities that you enjoy. For example, after a hard day’s work, the office worker may want to go for a relaxing walk. After a long tiring day at school, the student prefers jogging to resting at home.
When your body is tired, one way of curing tiredness is by improving the body’s blood circulation.
When we take part in an activity, our blood circulation is improved.

A. When you are tired, the best thing to do is to get plenty of rest. B. In the end, we would become more refreshed. C. Why do people get tired? D. Nevertheless, sleeping is not the only way to get our bodies rested. E. This way of getting rid of tiredness does work.

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