Football is a sport that involve kicking a ball to score a goal. It is a game in which two teams consisting of 11 players, using any part of their bodies except their hands and arms, try to manipulate the ball into the opposite team’s goaling area. A football player or footballer is a sport person who plays one of the different types of football. Only the goalkeeper is allowed to handle the ball and can only do so within the penalty area surrounding the goal. The team that scores the most goals wins. The main types of football are association football, American football, Canadian football, Australian rules football, Gaelic football, rugby league and rugby union. It has been estimated that there are 250 million association football players in the world, and many play the other forms of football. Modern football began from Britain in the 19th century. Sports commonly called football include association football, gridiron football, Australian rules football, rugby football and Gaelic football. These various forms of football share to varying extent common origins and are known as football codes. There are numerous references to traditional ball games played in different parts of the world. Modern rules of football can be led back to the systemization of these games at English schools in the 19th century. The expansion and cultural influence of the British Empire allowed these rules of football to spread to areas of British influence outside the directly controlled Empire. By the end of the 19th century, distinct regional codes were already developing: Gaelic football, for example, deliberately incorporated the rules of local traditional football games in order to maintain their heritage. In 1888, The Football League was founded in England, becoming the first of many professional football competitions. During the 20th century, several of the various kinds of football grew to become some of the most popular team sports in the world. Since before medieval times, “folk football” games have been played in towns and villages according to local traditions and with the least leniency of rules. Industrialization and urbanization reduced the amount of free time and space available to the working community, mixed with a history of legislative prohibitions against mostly violent and harmful forms of folk football to erode the game’s status from the early 19th century and onward. However, football was taken up as a winter game between residential houses aside public schools such as Winchester, Charterhouse, and Eton. Each school has its own rules; some allow limited handling of the ball and others do not. The difference in regulations made it difficult for public schoolboys entering university to continue playing except with their previous schoolmates. As early as the mid-18th century, an attempt to standardize and neutralize the rules of playing was made at the University of Cambridge, whose students joined most public schools in the 18th century in adopting these “Cambridge rules,” which were further spread by Cambridge graduates who formed football clubs. A series of meetings involving clubs from modern London and its nearby counties produced the officially stated rules of football, which prohibited the holding of the ball. Thus, the “handling” game of rugby remained excluded from the newly established Football Association (FA). Indeed, by the end of the18th century, all handling of the ball apart from the goalkeeper was prohibited by the FA. The new rules were not particularly accepted in Britain, however; many clubs devised their own rules, especially inside and surrounding Sheffield. Although this northern English city was the head-quarters of the first provincial club to join the FA, in 1867 it also formed the Sheffield Football Association, the leader of later county associations. Sheffield and London clubs played two matches against each other in 1866, under the revised rules.15 FA clubs accepted an invitation to enter a cup competition and to collaborate to the purchase of an award. The associations of Great Britain had agreed upon a uniform code and 43 clubs were in competition. Although football is an energetic game and it has a lot of advantages including the facts that football players workout more than an average person and live a healthier life than most but the risk factor in playing football is that football players are more likely to suffer sports injuries than most players and some of these injuries last long or even for a lifetime. This concludes that if at one place a situation has its advantages, on the other hand it can have its disadvantages, too.