In Avengers: Infinity War, Captain America and Co. made two-and-a-half hours of brawling with super-powerful arch-enemy Thanos look natural. But in real life, even the simplest combat stunts take hours upon hours to learn. All the Crossfit classes in the world can’t prepare you for Superhero 101, which our fitness editor Ebenezer Samuel learned firsthand when he got behind-the-scenes stunt lessons from the cast of Marvel Universe Live: Age of Heroes. Men's Health Official Site: www.menshealth.com/ Men's Health on Facebook: www.facebook.com/MensHealth/ Men's Health on Twitter: twitter.com/MensHealthMag Men's Health on Instagram: www.instagram.com/menshealthmag/ Men's Health on Pinterest: www.pinterest.com/menshealthmag/