6C. Read the text again and complete the table below. There are some principles to keep fit — reasonable diet, regular work and rest, appropriate exercise and a good mood. For one thing, only we keep our life regular may we be in a good mood and keep the disease away from us. And doing exercise has an additional healthy effect on our body. For another, keeping a good mood is also essential for us to keep healthy. We need to keep a good mood and relieve the stress in our mind in time as much as possible. No matter what kind of ways we take to keep fit, do not go far away from these basic principles.