Football is a sport played between two teams of 11 people. The teams try to kick or head the ball into the other team's goal. The team that kicks or heads the ball into the other team's goal the most times at the end of the game wins. There are also some rules that everyone playing football needs to follow. For example, you can't touch the ball with your arms or hands, only your feet, head, and chest. You also can't tackle another player or push them around. If a player breaks one of these rules, they get a penalty which can be a free kick or even a time out.