Train How To Increase Lifting Strength for Hero Wall Obstacle Author: Tough Mudder March 20, 2018 Share on Facebook Share on Twitter With obstacles like Hero Wall, Blockness Monster and Skidmarrked, upper body strength is key to lifting fellow Mudders up and over. Do 3 rounds of these 3 exercises – 15 seconds of work with 10 seconds of rest, to maximize your lift on course in 2018. Video of FhJsqvD9KP4