There is an old saying in China that "health is wealth". In other words, everything we have is based on health. As long as we are healthy, we can enjoy everything we want and do everything we want, whether we have money or not. On the contrary, if we have no health, nothing belongs to us, because we are busy seeing doctors and taking medicine frequently. Losing health means losing everything. But what should we do to be healthy? First of all, we should have enough sleep. A person needs 8 or 9 hours of sleep every night. Second, we should keep a balanced diet. We should eat more vegetables instead of meat. Third, we need to do exercise from time to time. In the morning, we can run, and on weekends, we can ride bicycles. Friends, let's try our best to keep healthy, because health is very important to all of us.