Keep healthy is very important to us. But how to keep healthy is a problem.As we know, food gives us energy. So first, we must have enough food everyday. And we must also have the right kinds of food. We should eat fresh fruit and vegetables but less meat. We shouldn't eat bad food or drink sour milk. Because they are bad for our body. We should keep the air clean and fresh and keep our bodies ciean.The second, we should do more exersise. We can piay basketball, soccer and volleyball or swim and skate. Swimming is good for our lungs. Walking is good for our legs, heart, and lungs.So we must do more exersise.