 Unlike baseball, which is the last sport that we looked at on this channel, football is a timed game. So there is a clock, and of course then the team who has scored the most points when the clock, when the time expires, has won the game. So what I want to look at in this video is how is the timing of the game governed, what are the reasons why the clock would continue to run, and the reasons also why would the clock stop. So this is all about the clock. So the first thing that we should understand about the game is that football game will be comprised of four quarters, and each of those quarters will be 15 minutes long. So that's basically the typical layout of the football game. The football game will play the first quarter, 15 minutes, then the two teams will switch sides, or simply switch the direction that they are going. The team who is on offense at the end of the first quarter still remains on offense to start the second quarter, but they have a short break in between those. Then at the end of the second quarter there will be a little bit, a longer break for half time. And then to start the third quarter there will be another kickoff that will be received by the team who had originally kicked off to start the game. So they kind of switch sides there. Then the end of the third quarter is similar to the end of the first quarter in that there's a short break. Simply switch sides with the team who is on offense, remains on offense. And then of course the end of the game at the end of the fourth quarter. There are two times during the game where the clock will automatically stop. And these are called the two minute warning. Two minute warning. And the two minute warnings occur with two minutes remaining in the second quarter and two minutes remaining in the fourth quarters, which is two minutes remaining in the first half and two minutes remaining in the game in regulation time. And so these are just automatic extra timeouts that will occur. Each team does have three timeouts of their own and they get three timeouts per half. So three timeouts in the first half, three timeouts in the second half. If you don't use a timeout, say you have two timeouts still remaining after the end of the first half, you don't get to carry those over. So you would only get three timeouts then in the second half. And you can use those timeouts either on offense or defense as long as the play isn't happening at that time. You can't call timeout in the middle of a play. But anytime up to the point where the ball is snapped and the play begins, your team can call a timeout. So the main thing I want to focus on in this video is why does the clock stop? These will be reasons the clock stops. And it will be pretty simple to see once you get the hang of it. There's going to be a lot of reasons we'll list off here, but once you watch a few games, once you kind of get used to the pace of the game, the way that the clock runs will make a lot of sense to you quickly. So the first reason would be if a player has the ball and they go out of bounds. So this would simply be similar to like in the last video when we looked at tackling. In a play where a player on offense, the ball carrier is tackled and they remain in the field of play, the clock would continue to move. The clock would not stop. However, if a player is pushed out of bounds or runs out of bounds when they have the ball, then the clock would stop in that case. And so sometimes players will use this, especially toward the end of the game or the end of the half when they're trying to preserve time. They will run out of bounds on purpose and to stop the clock to preserve that time for their team. So they can not lose any time on the clock before they start the next play. The second reason would be an incomplete pass, which of course we looked at and that is whenever the quarterback throws the ball and it is not caught by a receiver. So an incomplete pass will stop the clock. Anytime there is an exchange of the ball, which is to say that the offense would become the defense and the defense would then become the offense. So these are things like kickoffs, punts, and then turnovers, which we looked at. These are fumbles and interceptions. So anytime these things occur, the clock would then stop while the two teams, the offensive players run off the field and the defensive players come on for each team. Anytime there is a penalty called or a foul, a flag will be thrown by the referee. We'll start to get into what the penalties are and the things that you cannot do. But anytime there is a penalty called and the referee has to take the time and to announce what that foul is that has been committed, what the consequences are going to be. They will stop the clock for that. Anytime either team scores, whether it's a field goal or a touchdown, the clock will be stopped and it's kind of similar to switching sides after the ball has been turned over. Just give both teams time to get their players on and off the field. And then the final thing will be if there is an injury on the field. Then we would obviously give that player adequate time for the trainers to get out there and to help that player off the field or do whatever they have to do to attend to his injury. So those are the reasons that the clock would stop throughout the course of a game. It may seem like a lot, but as I said, once you watch a few games and you get into the rhythm of the game, it all really starts to make sense and it's really not all that complicated.