Everyone knows how important health is, but how many people can keep themselves healthy? If you want to live a happy life, health is one of the most important things you need. If you are healthy enough, you can do everything you like, but if you are not healthy, how can you do that? So we must keep healthy. The most simple way is that you must hare a healthy diet, and eat less unhealthy food .Do more exercise, then you will find how colourful the life is! Enjoy the healthy diet, enjoy you happy life.