The Iron Scriptures

And the reign of King Gainzilla began, and he ruled with an iron grip, swinging the sacred kettlebells with mighty purpose. "Blessed are those who master the hip hinge and engage thy core," declared Gainzilla, "for they shall inherit the kingdom of functional strength, but cursed be the one who locketh not their knees, for Brodin shall smite them with the plague of lower back pain." The Iron Maidens bore witness to his technique and spread his teachings throughout the realm, that all might swing with power and precision in the name of the Swolfather.