Coach Nana explains what "motion" means in football, which is defined as something the offense does pre-snap, such as a receiver running across the field or a running back flaring out before the ball is snapped. It is important for a linebacker to call out any motion when they see it. Depending on the play call, the coach's instructions, and the offense's tendencies, a linebacker might react to the motion by shifting to the motion side, for instance, if a slot receiver is motioning all the way across the field. Even if the linebacker is not required to react to the motion, they should still call it out because a defensive back (DB) might have to react to it.