英语作文健康的重要和方法 还有意见

The human body is wonderful engine .It is far more delicate than a locomotive .Everyone must be the engineer and fireman of his own body.If well maintained,If it is out of order,its master will suffer.There are a number of useful rules which will ensure good health if people follow them.
　　Cleanliness-The body needs to be kept clean.It should be washed at least once a week in winter and once a day in summer.
Fresh air- One of the chief constituents of the air is oxygen,which is necessary for life.We ought to see that our rooms are always full of fresh air.