Dear doctor,

I'm Tim. I'm nine years old. I like hamburgers and cake. I look very strong but I often have a cold. My parents are worried. They advise（建议）me to run in the park. But running is difficult for me. I can't run for half an hour. What can I do?

Tim

Dear Tim,

I'm happy you are paying attention to your health. Let me give you some advice（建议）.

First, don't eat junk food. It's bad for your health. You should eat more vegetables and fruit.

Then, you can ask your parents or friends for help. You can run with them. They can encourage（鼓励）you when you are running.

Dr Li

We have some healthy eating habits to share with you.

Drink enough water. We should drink six to eight glasses of water every day. Don't replace（代替）water with sweet drinks.

Eat many kinds（种类） of food every day. You should eat some grains, such as noodles, rice and bread. They help you grow strong. You also need to eat some vegetables, fruit and proteins. We need these to make sure all parts of our bodies can work well. And they are good for our eyes.

Don't eat too much at each meal. And we shouldn't eat anything after 9 o'clock in the evening. It's bad for our bodies.

Do you know World Sleep Day? It's on March 21st every year.

Sleep is very important for us. Let's learn more about it!

1.

Sleep is a special rest time for us. It can help our bodies and brains（头脑）rest. During the day, we work hard and learn new things. So we need to sleep to help us think better and remember things.

2.

Here's a table about children's sleep time:

3.

★ Try to have dinner 2~3 hours before going to bed. Then don't eat anything.

★ Don't make us excited before going to bed. We can walk or jog（慢跑）. These also help us feel relaxed（放松的）.

★ Don't sleep too long on weekends because it will change the body clock（生物钟）.