Fist pumping during the days were only done by three schools where the students knew the Alma Mater Hymn by heart. By heart.
When San Beda came back to the NCAA, the Bedans were the only one who were fist pumping AND singing their Hymn. Prior to Ateneo and La Salle, there was no such thing in the UAAP.
What happened? How did this evolve into another common and expected act among fans of every school when the recorded school hymn is being played? Frankly the act has lost it's fire and brimstone aspect of defiance because of the corporate agenda of schools. It's now a freaking corporate script. Bland and common. Darn capitalists. Darn clerico-fascists.