Everyone wants to be healthy. Then do you know how to keep in good health? You may say, "Having a balanced diet and doing exercise can help us." I agree with you. _ 1  In fact, good sleep is also very important. Lots of people in the world have sleep problems. They can't sleep well at night. _ They are unhappy and stressed out. Then they may have some other health problems. _ 2 _  How can people sleep well at night? Here are some good ideas. _ 3 _  * Sleep in a quiet room. * Do some exercise before going to bed. It'll make you sleepy . * Wash your feet in warm water before you go to bed. * Have a glass of milk. It's pretty good for sleeping. * Don't think about boring things. _ 4Try to be relaxed. We can put "For example, heart disease  and headaches." in   _  .
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