Nowadays, more and more people are more concerned about their health than their income and the methods they take to keep fit vary from person to person. For my point of view, there are basic principles to keep fit—reasonable diet, regular work and rest, appropriate exercise and a good mood.

如今，越来越多人更多地关注他们的健康状况，而不是他们的收入，他们采取如何保持健康的方法各不相同。在我看来，保持健康离不开这三个原则——合理的饮食，有规律的作息，适当的运动以及好心情。

For one thing, I believe that no one will fail to notice the importance of reasonable diet, regular work and rest and appropriate exercise. Only we keep our life regular may we be in good the whole day and keep the disease away from us. And doing exercise has an additional effect for our bodies' normal operation.

一方面，我相信所有人都知道合理饮食，有规律的作息和适当的运动的重要性。只有生活得有规律，我们才可能整天保持好状态，远离疾病。另外，做运动对于我们身体的正常运转有辅助作用。

For another, keeping a good mood is also essential for us to keep healthy. Some people do not understand why they still feel not well even though their life is regular. That is because they have too much stress in their mind and cannot relieve it, especially when they are in busy, and even some of them do not have any awareness of the influence that their stress brings to them. Therefore, except for the regular life and exercise, we need to keep a good mood and relieve negative moods in time as much as possible. Although it is hard to achieve when we encounter some unpleased matters, we still need to try our best to do it, or try to shorten the time we are in negative moods.

另一方面，要保持健康，保持好心情也很重要。尽管有些生活很有规律，但是他们仍然感觉状态不好。原因在于他们精神上负担着太多的压力，得不到释放，尤其是 当他们处于忙碌状态的时候，甚至于有些人没有意识到他们的压力所带来的影响。因此，