Throwing short to running backs and tight ends may not at first result in big yardage, but by forcing a defense to play back on its heels and to react to what you are doing on offense , big gains will result from breakdowns in coverage and poor tackling. Since an offense wants to dictate to a defense, rather than the other way around, an offensive team can disrupt and confuse its opponent by working at a faster tempo. Call the play, get to the line of scrimmage quickly, snap the ball quickly, hurry back to the huddle. Don't allow the defense time enough to think or catch its breath. Eventually you will see elements of the no-huddle in the Giants' playbook.
Timing is vitally important.
It is not unusual to see the quarterback take a quick 3-step drop and fire the football. The quarterback and the receivers must have their timing down. If the quarterback isn't ready to throw or the receiver isn't ready to catch at the proper moment, the play may break down. The system is very cerebral. Not just for the quarterback, but for everyone on offense.