It's very important to keep your mind and body healthy.First of all,you should get enough sleep at night.If you go to bed late,you will feel tired and you won't be able to work well.Secondly,you should follow a healthy diet.You should eat more fruit and vegetables every day because fruit and vegetables are rich in vitamins and have little fat.Don't forget to drink more milk.Milk will help your bones grow.You need to eat breakfast every day.It is good for you body and mind.Another thing- you should also drink enough water,usually around six to eight glasses a day.Finally,you should also get more fresh air.Go outside and exercise.Ride your bike to school or go for a walk in the park.Remember the old saying:Look after your body and it will look after you!