Nowadays,more and more people are concemed about their health.So it is necessary for us to know how to keep healthy. First of all ,it's necessary for us to keep a balanced diet, we should eat more vegetables and fruits which contain lots of vitamins and less meat which contains a lot of fat.Besides, some people,especially girls,choose to go on a diet to look good ,which actually has a bad influence on their health .Moreover,keeping a good state of mind is also good for our health .We should always take a positive attitude towards life .Last but not least,make sure we take proper excise every day .Running or walking ,simple as it is ,has a positive effect on our health. In a word,there is a lot we can do to keep healthy . Let's take action to be healthier.