Junk food has both good and bad at the same time. There may be more convenient to buy them in a hurry. But these useless junk food either. If we eat a lot will be caused by the body, such as heart disease, obesity, etc. This will make our health is deteriorating. We need to eat a healthy diet. The nutrients that the 5 groups, or if you want to eat junk food really. It is wise to exercise after eating a meal. In order for us to stay healthy and Lean.