A healthy person is a wealthy person. Wealth is here valued in terms of the person's physical well-being so that he or she is able to go about and carry out day-to-day tasks easily.【小题1】 To achieve this, physical exercise is a must.

【小题2】Modern-day diseases like heart problems, diabetes (糖尿病),and certain cancers are all caused by the shortage of exercise. Oppositely, anyone having these diseases will get well if they include exercise as part of their daily life.

Doctors think not enough exercise leads to many people having one form or another of sleeplessness. Moreover, when we sleep better, we can protect ourselves from diseases.【小题3】 During tasks, their bodies physically become worse. Their bones, internal parts, and cardiovascular system are all badly influenced. However, it has been found that exercise reduces changes noticeably.

Another example of how exercise helps us to feel better is that it makes us lose weight. It burns off the energy. In our push-button lifestyle, we have become quite sedentary (久坐不动).   “Why walk, when we can take the car” seems to be the way of life for all of us. 【小题4】 Moreover, we seem to be only exercising our fingers as we play computer games, surf the Net, and press the keys to choose our favorite television program.

Lastly, students should exercise at least three times a week for at least twenty minutes each time, as exercise is a good stress killer. 【小题5】One of them can make a person become less stressed and more cheerful. Students preparing for their examinations are therefore able to concentrate better. As a result, they will do better in their examinations.

In a word, regular exercise is a useful way by which we can not only feel younger, but look younger.