A little bit about the game
The game is played in the sixty minutes in college and professional football. The game is divided into two halves. There are two periods called quarters in each half. Between each half, there is a twenty minute half-time. After the first and third quarters, there are one to two minute rest periods. The teams switch goals after each quarter. If there is an incomplete pass, the ball carrier goes ot of bounds, a player is injured, a team scores, or if a player or official calls a timeout, the official time clock is stopped. Each half, the teams get three timeouts each. In high school and college, the timeouts last ninety seconds and in the NFL they last two minutes. The clock is stopped briefly to move the markers in college. In an NFL game, there is a two minute warning during the final two minutes of each half. Also, in the NFL, you can challenge a penalty.