阅读下面短文, 按照句子结构的语法性和上下文连贯的要求, 在空格处填入一个适当的
词或使用括号中词语的正确形式填空。
About the importance of health, nobody can explain (well) than your doctor. They are the people who really know the importance of keeping fit and healthy. Every time I put on extra pound, my doctor will remind me about what is happening my body. We may look healthy but we don't know (clear) what is happening inside. And there are many different ways we can make sure that we are as (health) inside as we are outside. The first and easiest step is keeping a good balanced diet. Next is sleeping well. Sleep early. Make sure you get your nine hours' sleep. Do not skip your breakfast. It is one of the most important (meal) of the day. Exercise every day. Go for a swim, or walk, or just play football or tennis. Try your best not to have too much stress because it's very (harm) to your health. Remember to keep (wash) your hands, and then you won't catch any infections(传染病). And getting away from your bad habits (be) important too.