Nowadays,healthy in very important to people.So we should make use of some effetive methods to keep healthy.First ,we should have enough sleep.The good sleep helps us keep a sober mind during the day and is good for our body.Second,take more exercise.Only exercise can promote your health.Third,watch your diet.A good diet is the key to good health.If you can do these three things above ,I believe you will have a very strong body.