"To save someone else, you'll always go harder," is the mantra of Mark Twight, founder of Gym Jones, the elite training center for the U.S. Army National Guard and Hollywood productions like "Man of Steel."
Because to be a hero, he insists, you need strength of mind and strength of character, not just strength of body.
See how Gym Jones trains all three kinds of strength in this third episode of "Soldier of Steel":
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Or go back into the "Zero to Superhero" archive to watch from the beginning!