Next time you are at a game, watch closely. He may do this several times, to make sure all of his teammates hear him. The 25-second clock begins as soon as the referee marks the ball on the field and signals the clock operator. By this time, the offensive huddle already is forming. Huddles come in different shapes and sizes.
Most teams use the traditional circle huddle.
Some teams hold hands in the huddle. United, we stand. When you're down, you have your partner right next to you to squeeze your hand, pick you up and say, 'Don't worry. As the huddle forms, the quarterback receives the next play from coaches. The time to ask questions' During this time, players in the huddle go over the previous play.