Football (American) is a high-intensity, strategic team sport played between two teams of 11 players each, aiming to score points by advancing an oval-shaped ball into the opponent's end zone or kicking it through their goalposts. The game is divided into four quarters, each lasting 15 minutes, with stoppages for timeouts, injuries, and other delays. Teams alternate between offense and defense, with the offense attempting to advance the ball down the field to score, while the defense aims to stop them by tackling ball carriers, intercepting passes, or forcing turnovers. The offense typically has four downs, or attempts, to advance the ball at least 10 yards. If successful, they receive another set of downs; otherwise, possession changes to the opposing team. Key positions include the quarterback, who leads the offense and orchestrates plays, and the offensive linemen, who protect the quarterback and create running lanes for ball carriers. On defense, players such as defensive linemen, linebackers, and defensive backs work together to disrupt the opposing team's offense and prevent them from scoring. Scoring opportunities in American football include touchdowns, worth six points, achieved by carrying or catching the ball into the opponent's end zone; field goals, worth three points, kicked through the opponent's goalposts; and extra points, worth one or two points, attempted after a touchdown. Safety, worth two points, occurs when the defense tackles an offensive player in their own end zone. The team with the most points at the end of the game wins, with ties resolved through overtime periods. American football demands strategy, athleticism, and teamwork, making it one of the most popular and complex sports in the United States.