书面表达。
现在人们越来越重视健康问题了，请你根据下面的图示，简要介绍一下如何才能保持健康，
并展开想象，适当发挥。
要求语句通顺，无语法错误。80词左右。
All of us want to keep healthy. But how can we keep healthy? First, I think sleep is very important.
Usually we need about eight hours' sleep every night. Then we will feel active and energetic during the
day. A healthy diet is also important. Fresh vegetables and fruit and fish are good for us. We shouldn't
eat too many snacks and fast food, such as hamburgers and coke. Besides, everyone needs to do some
exercise in order to keep fit, such as jogging and playing ball games. Of course there are other ways to
keep healthy. For example, we also need to keep the environment clean and tidy. I think having a good
state of mind is very important, too.
(答案不唯一)