The Iron Scriptures

And lo, Flextor did bestow upon the faithful the sacred knowledge of the core, saying, "Blessed are those who strengthen their temple from within, for they shall move mountains of iron without injury." Keep thy core braced in all movements, for as the trunk supports the mighty oak, so does thy abdomen support thy lifts, and those who neglect this teaching shall be visited by the wrath of lower back pain, sent forth by Swoliosis in his mischief.