exercising Undoubtedly exercising plays an important role in our life. Adults as a result of modernity are so involved with ordinary issues which have less time to do body activities. But children have more time to do that in compare with adults. Exercising has many advantages and disadvantages for children. Although it can be healthful entertainment, some people believe it can keep children far away from daily works. This subject can somehow be interpreted as an equivocal and controversial issue in our modern society. No wonder, body activities are one the basic necessities for body's health. Daily exercising not only helps children to lose weight and keep appropriate shape and fitness but also improve their health. Many studies have shown that regular exercise has numerous benefits. Reducing the risk of hurt attack, cancers, and blood pressure should not be underestimated. Body activities trigger the body's metabolism to burn excess fat and energy. It should be noted that it will improve the bones and muscles of their body. Most important of all, it will help children to forget the sadness and bring about mentally recreation. In other words, it reduces the feeling of depressive and boredom and makes them feel relaxed. On the other hand, group exercise gives them a chance to accommodate themselves with other members. For instance, playing football not only will have remarkable influence on their healthy, but also help them to accomplish and train a group work with each other. On the other hand, one of the disadvantages of exercising can be associated with time wastages and disconcertion. Unfortunately, some children forget their daily life. Over exercising will lead to collapse in the efficiency of children in their lessons. In addition, some accident might happen for them that might have irreparable influences on their healthy and cost a great deal of money for them. Furthermore it can keep them away from daily activities, family, and friends. Instead of spending time with their friend and going to cinema or theater for instance, they prefer to play football or tennis. It can have negative influence on growing of their personality. In summary, taking into account all of these factors, we reach the conclusion that although practicing sport have undeniable influence on children, its negative impact should not be underestimated. It is worth while mentioning here that everything has two sides.