American Football

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American football is a high-energy contact sport played by two teams of eleven players each on a rectangular field with goalposts at each end. Players wear protective gear including helmets and shoulder pads to reduce the risk of injury from tackles and collisions. The objective is to score points by carrying or throwing the ball into the end zone of the opponent's field, while preventing the other team from doing the same. The game begins with a kickoff where one team kicks the ball to the other team, allowing them to start their drive. Players can either run with the ball (rushing) or throw it to teammates downfield (passing). If they fail to advance 10 yards in four downs (plays), possession is turned over to the opposing team. Defensive players attempt to tackle the ball carrier to ground or intercept passes, while linemen try to block kicks and snaps. Special teams units handle kicking and returning duties, including kickoffs, punts, and field goals. Coaches develop game plans and make strategic decisions during timeouts to outmaneuver their opponents. Penalties can result in lost yards or possession for the offending team, with common infractions including holding, offside, and pass interference. Injuries are a risk, especially to quarterbacks and running backs, but teams often employ medical staff and athletic trainers to aid in recovery. The four quarters of the game last 15 minutes each, with the team scoring the most points at the end declared the winner. The NFL (National Football League) is the top professional league, with college football competitions also highly popular.