When playing Natasha Romanoff — aka Black Widow in the blockbuster Marvel Avengers series — Oscar-nominated actress Scarlett Johansson kicks ass with style, expertly dispensing with bad guys while strutting her superhero physique in a leather hide-nothing catsuit. The mastermind responsible for Johansson’s super bod is James “Duffy” Gaver, former Navy SEAL turned celebrity trainer. Gaver has created a workout similar to Johansson’s exclusively for Oxygen readers that can help everyday superheroes increase explosiveness, strength, endurance, power, coordination, speed and agility. He also offers up a fun self-test to determine where you rank among the world’s greatest cinematic crusaders and see how you can follow in Black Widow’s (silent but deadly) footsteps — catsuit optional.