(NEXSTAR) — If you’ve seen plenty of commercials, or are just waiting for Kendrick Lamar's halftime show, the multiple interruptions to the Super Bowl may be slightly annoying. None, however, may be more confusing than the twice-a-game two-minute warning.

All NFL games have two-minute warnings, the automatic timeouts that occur when the game clock hits the two-minute mark at the end of the second and fourth quarters. After the two-minute warning, certain clock running rules also take effect.

Why does the NFL stop games and use different rules when there are just a couple of minutes left in the half?