The desire for good health is universal. In our competitive society it is important to maintain good health. On the one hand, people with good health can do work with full confidence and their progress in work in turn contributes to their health and happiness. On the other hand, a sick person is usually not interested in everything around him and therefore he loses many opportunities to become successful.

　　There are many ways to keep it. First, those who are always on the go from morning till night should find time to relax because too much stress will affect their health. Second, enough time should be left for sleep because that will help one become rested and refreshed. Finally, regular physical exercises benefit ones health a lot. So one should always keep in mind that a certain amount of exercise is not a waste of time.

　　As for me, I like playing tennis in the morning. I also attach much importance to enough sleep and relaxation. I believe this will ensure my good health for the rest of my life.