as we all know, healthy is very important to everybody.but do you really know how to stay healthy? here are some useful tips. first, we should do exercise if we have time.for example, we can go to swim in the summer holiday. or we can take a walk after supper.doing exercise makes us healthy and strong. second, we should take more vegetables and fruit and less candies. stop eating junk food and drinking beers. last but not least, we should go to bed early and wake up early. we should have enough sleep, or we will get sleepy in the day time. if we pay more attention to the tips above, we will have healthier body. i wish everybody has a strong and healthy body.